Adrenalectomy for Pheochromocytoma: How Surgeons Remove the Adrenal Tumor Safely

For three years she had called them panic attacks: a pounding heart at the grocery store, a soaked pillow at 3 a.m., a headache that felt like a hand pressing on the back of her skull. Then a scan for something unrelated found a walnut-sized mass sitting on top of her left kidney, and a blood test confirmed what the emergency room had missed twice. Now she is reading about pheochromocytoma adrenalectomy on her phone in a parking lot, and the first word she sees is “crisis.”

That word deserves context. The operation to remove a pheochromocytoma is one of the more choreographed procedures in surgery, not because the incisions are complicated, but because the tumor fights back when touched. Surgeons, anesthesiologists and endocrinologists spend weeks preparing the body before anyone picks up a scalpel.

This explainer walks through that preparation, what happens in the operating room, the first two days afterward, and the questions worth asking before you sign a consent form.

What is a pheochromocytoma adrenalectomy, and why is this operation different?

Start with the anatomy. Each adrenal gland is a small, triangular organ perched on top of a kidney. Its outer layer, the cortex, makes cortisol and aldosterone; its inner core, the medulla, makes catecholamines, the chemical messengers adrenaline and noradrenaline that drive the fight-or-flight response. A pheochromocytoma is a tumor of that inner core, and it releases catecholamines in unpredictable bursts. An adrenalectomy is the surgical removal of an adrenal gland, sometimes together with the tumor alone if part of the gland can be saved.

Most pheochromocytomas are not cancerous, according to MedlinePlus, and most people have only one gland affected. The remaining gland takes over hormone production, which is why a single adrenalectomy rarely requires lifelong hormone replacement.

What makes this surgery unusual is the tumor’s behavior on the table. Think of it as a sponge soaked in adrenaline. Every time the surgeon grasps it, retracts it or even shifts the bowel beside it, a squeeze of hormone enters the bloodstream. Blood pressure can spike within seconds. Then, once the surgeon ties off the vein draining the tumor, the supply stops abruptly. Blood vessels that have been clamped tight for years relax all at once, and pressure can fall just as sharply.

So a pheochromocytoma adrenalectomy is as much an anesthetic event as a surgical one. The Endocrine Society clinical practice guideline recommends that these patients be managed by a multidisciplinary team, with the surgeon and anesthesiologist planning together from the first clinic visit.

Is adrenalectomy a major surgery?

Yes, by any honest definition. It requires general anesthesia, entry into the abdomen or the space behind it, and the removal of an organ that sits close to the kidney, the spleen or liver, the pancreas and some of the body’s largest blood vessels. Surgeons classify it as major even when it is performed through a few small incisions.

The reason it can feel like something less is that the incisions themselves are often modest. In a laparoscopic, or keyhole, operation, the surgeon works through several ports the width of a fingertip, using a camera and long instruments. Patients frequently go home within a few days, as MedlinePlus describes, and the visible scars are short. That is a real advantage: less pain, faster walking, lower wound-related risk.

Do not let the scar size fool you about what your body goes through. For a pheochromocytoma specifically, the heaviest part of the operation is invisible. The cardiovascular system is asked to absorb hormone surges and then a sudden hormone withdrawal within the same hour. Anesthesia teams place an arterial line, a thin catheter in a wrist artery that displays blood pressure beat by beat, precisely because the swings can be too fast for a standard cuff to catch.

Compared with removing a gallbladder, which is also a keyhole operation, the physiological stakes are higher. Compared with open heart surgery, the recovery is usually far shorter. Somewhere between those two sits the honest answer: a major operation on a small organ, made safe mainly by preparation rather than by the length of the cut.

Who is usually offered pheochromocytoma adrenalectomy, and who is asked to wait

Surgery is the standard treatment for nearly everyone with a confirmed pheochromocytoma, because the tumor left in place keeps the heart and blood vessels under chronic assault. Mayo Clinic notes that removal is usually recommended even when symptoms are mild, since untreated tumors raise the risk of hypertensive crises, heart damage and stroke.

“Confirmed” is the key word. Before anyone is scheduled, the diagnosis needs two legs to stand on. The first is biochemical: the Endocrine Society guideline recommends measuring plasma free metanephrines or urinary fractionated metanephrines, the breakdown products of catecholamines, because these are more reliable than measuring the hormones themselves. The second is anatomical: a CT or MRI scan to locate the tumor and check both glands. When there is any hint of a second site or hereditary disease, functional imaging that lights up hormone-producing tissue anywhere in the body may be added.

Who is asked to wait? In a sense, everyone. The guideline calls for a period of medical preparation before surgery, so an operation the week of diagnosis is rare and usually unwise. Beyond that, some groups wait longer:

• People whose heart has been strained by prolonged catecholamine exposure, a condition sometimes called catecholamine cardiomyopathy, may need time for heart function to recover under treatment.
• People with very high, poorly controlled blood pressure need it settled first.
• People who are pregnant have timing decided jointly with obstetric specialists.
• People whose tumor has already spread may follow a different plan in which surgery is one part of a broader strategy.

None of these are judgments about deservingness. They are about arriving in the operating room with the odds tilted in your favor.

What alpha-blockade does in the weeks before surgery

Here is the mechanism, in plain terms. Catecholamines tighten blood vessels by latching onto alpha-adrenergic receptors on the vessel wall. Years of tumor output leave those vessels chronically constricted and the circulation running on a reduced volume of blood, like a garden hose kinked at the tap. An alpha-blocker is a medicine that sits on those receptors and prevents the hormones from binding. The vessels relax, and over days the body refills the circulation.

The Endocrine Society guideline recommends preoperative blockade for most patients for a typical window of seven to fourteen days, combined with a diet higher in salt and generous fluid intake to expand blood volume. That combination is what blunts the intraoperative swings: relaxed vessels spike less when hormone is released, and a full circulation drops less when the hormone source is removed.

Expect the preparation to feel odd. Standing up may bring a moment of lightheadedness, the nose may feel stuffy, and tiredness is common. These are signs the medicine is doing its job, not that something is wrong, though anything severe belongs in a phone call to the prescribing team.

Order matters. Beta-blockers, which slow the heart, are generally introduced only after alpha-blockade is established, because slowing the heart while vessels are still clamped can worsen blood pressure. Calcium channel blockers are sometimes used as an alternative or an addition. Which class, how much and for how long are decisions for the prescribing clinician, and stopping or skipping doses to feel “more normal” before surgery undoes the very protection the operation depends on.

What actually happens in the operating room

The day begins with lines rather than incisions. After general anesthesia, the team places an arterial line for continuous pressure readings and often a central venous line, a catheter in a large vein of the neck or chest, so that fast-acting medicines can be given the moment they are needed. Short-acting vasodilators to lower pressure and vasopressors to raise it are drawn up and waiting before the first cut.

Positioning comes next. For a keyhole approach through the abdomen, the patient usually lies on the opposite side so that gravity pulls the liver or spleen away from the gland. For the approach from the back, the retroperitoneoscopic route, the patient lies face down and the surgeon enters just below the ribs without passing through the abdominal cavity at all.

The surgical strategy has one guiding priority: find and control the adrenal vein early. That single vessel carries the tumor’s hormone output into the bloodstream. Clamping it early limits how much adrenaline the manipulation releases. Surgeons handle the gland by its surrounding fat rather than the tumor itself, and they avoid squeezing or rupturing the capsule, both to reduce surges and to prevent tumor cells from spilling.

The anesthesiologist, meanwhile, is calling out numbers. Pressure climbs when the tumor is touched; the vasodilator goes in. The vein is tied; pressure falls; fluids and vasopressors follow. Once free, the gland is placed in a retrieval bag and removed through one slightly enlarged port. Drains are seldom needed. From the outside it looks like a routine keyhole operation. From the anesthesia chart it looks like a storm being steered.

Laparoscopic adrenalectomy for pheochromocytoma vs open surgery

The Endocrine Society guideline recommends minimally invasive adrenalectomy for most adrenal pheochromocytomas, reserving open surgery for large tumors, generally those over about 6 centimeters, or for tumors that appear to invade surrounding structures, where complete removal without rupture is harder to guarantee through small ports. Robot-assisted surgery is a variant of the keyhole approach rather than a third category. The table below summarizes the practical differences.

Feature	Keyhole (through the abdomen or from the back)	Open
Incisions	Several small ports	One longer incision under the ribs or across the upper abdomen
Usually chosen when	Tumor is small to moderate and appears contained	Tumor is large, invasive, or keyhole surgery is converted for safety
Hospital stay	Typically a few days (MedlinePlus)	Typically longer (MedlinePlus)
Return to usual activity	Often within weeks	Often several weeks or more
Main advantages	Less pain, quicker mobility, smaller scars	Direct access, easier control of bleeding, room for large specimens
Main limitations	Limited working space; may be converted to open	More postoperative pain; larger wound

Two points deserve emphasis. First, conversion from keyhole to open during the operation is a safety decision, not a failure; consent forms mention it for exactly that reason. Second, the choice of approach does not change the pre-operative preparation or the intraoperative monitoring one bit. The hormone problem is identical whichever way the surgeon enters, so the anesthesia plan is identical too. Timelines in the table are typical ranges drawn from MedlinePlus, not promises, and individual recovery varies with age, fitness and the reason the operation was chosen.

Cortical-sparing adrenalectomy: when surgeons try to keep part of the gland

Most people lose the whole affected gland, and that is fine, because the other gland compensates. The calculus changes when both glands are involved or likely to become involved. That happens most often in hereditary syndromes such as multiple endocrine neoplasia type 2 and von Hippel-Lindau disease, where pheochromocytomas frequently appear on both sides, sometimes years apart.

Removing both adrenal glands completely leaves a person without any natural cortisol or aldosterone. Cortisol is essential for life: it maintains blood pressure and blood sugar and helps the body respond to illness or injury. Someone without adrenal glands needs steroid hormone replacement every day for life and lives with the risk of adrenal crisis, a sudden collapse of blood pressure that can occur during vomiting illnesses, infections or missed doses.

A cortical-sparing, or partial, adrenalectomy removes the tumor and the medulla while leaving a rim of functioning cortex behind. The Endocrine Society guideline suggests this approach for patients with hereditary disease who have bilateral tumors, precisely to spare them lifelong dependence on replacement hormones.

The trade-off is real and should be discussed openly. Leaving adrenal tissue behind leaves tissue that could, in a hereditary condition, grow a new tumor, so surveillance continues for life. Whether the remnant produces enough cortisol is not guaranteed and is checked with blood tests after surgery. The decision weighs the burden of daily replacement and crisis risk against the chance of a second operation, and it is made case by case by the treating team, ideally with genetic testing results in hand before the first surgery.

What happens after a pheochromocytoma is removed? The first 48 hours

The storm does not end when the tumor leaves the room. The Endocrine Society guideline recommends close monitoring of blood pressure, heart rate and blood glucose for roughly 24 to 48 hours after surgery, and each of those three numbers has a story.

Blood pressure tends to run low. The vessels have relaxed, the pre-operative alpha-blocker may still be circulating, and the body has lost the hormonal tone it leaned on for years. Intravenous fluids usually correct this; occasionally a vasopressor infusion is continued in a monitored unit for the first night. Some people, by contrast, stay hypertensive. Long-standing high blood pressure can have its own momentum, either from pre-existing essential hypertension or from changes in the kidneys, so not everyone walks out with a normal reading.

Blood sugar can fall. Catecholamines suppress insulin release; remove them and insulin production rebounds while the liver’s stored sugar has been depleted. Nurses check glucose regularly and treat low readings, which is why the sweaty, shaky feeling in the recovery room should always be reported rather than shrugged off.

Heart rhythm is watched on a monitor because the transition out of a high-adrenaline state can bring irregular beats.

The rest of those first two days looks like any abdominal surgery: pain control, an early walk to the corridor, sips progressing to meals, catheter and lines coming out. If both glands were removed, steroid replacement begins before you leave the operating room and continues under the endocrinologist’s direction. Nobody should be discharged without knowing which medicines have changed and who to call about them.

Pheochromocytoma surgery recovery: the following days and weeks

Going home after keyhole adrenalectomy commonly happens within a few days, and open surgery typically means a longer stay, according to MedlinePlus. The first week at home is mostly about small things: shoulder-tip pain from the gas used to inflate the abdomen, bloating, tiredness that arrives mid-afternoon like a wall, and incisions that itch as they heal.

Walking is the best medicine available without a prescription. It reduces clot risk, wakes up the bowel and rebuilds stamina. Heavy lifting and vigorous exercise are usually restricted for a period the surgical team will specify, longer after open surgery. Driving waits until you can brake hard without flinching and are off strong pain medicine.

Blood pressure medicines need a review, not a self-directed purge. Many people find their pressure lower after the tumor is gone and their prescriptions are reduced by the prescriber; others continue treatment for underlying hypertension. Home readings, jotted down twice a day, give the follow-up clinic something concrete to work with.

Two appointments matter more than the wound check. The first is a repeat metanephrine test some weeks after surgery to confirm the hormone excess has resolved; the Endocrine Society guideline recommends this postoperative biochemical confirmation, with timing set by the team. The second is a conversation about genetics, discussed further below.

Emotionally, recovery can be strange. People who spent years being told their symptoms were anxiety sometimes grieve the time lost, or feel unmoored without the surges they had learned to live around. That is a normal response to a body recalibrating, and it is worth mentioning to your care team rather than carrying alone.

What are the side effects of an adrenalectomy?

Every operation carries general surgical risks, and adrenalectomy is no exception: bleeding, wound infection, blood clots in the legs or lungs, reactions to anesthesia, and injury to neighboring organs. Because the adrenal glands sit in crowded real estate, the structures at risk include the spleen and pancreas on the left, the liver and the large vein returning blood to the heart on the right, and the kidney and bowel on either side. Keyhole surgery may need to be converted to open surgery if bleeding or scarring makes the small-port view unsafe, as MedlinePlus explains.

Pheochromocytoma adds its own list. During and shortly after surgery, the main concerns are the blood pressure surges and drops described earlier, low blood sugar, and irregular heart rhythms. These are anticipated events with rehearsed responses, which is why they happen inside a monitored environment.

Hormone-related effects depend on how much adrenal tissue remains. With one healthy gland left, cortisol production is normally adequate. With both glands removed, or one removed when the other is already impaired, adrenal insufficiency follows, requiring daily replacement and a plan for illness days. Symptoms of insufficiency, such as profound fatigue, nausea and dizziness, should be reported promptly.

Later effects are quieter: numbness or a pulling sensation near the incisions, an incisional hernia in a minority of open operations, and persistent hypertension in those whose vessels or kidneys have been altered by years of exposure. The longest-lasting “side effect” is surveillance itself. Because tumors can recur or appear elsewhere, follow-up testing continues for years, and the Endocrine Society guideline suggests lifelong annual biochemical checks for many patients.

What is the “rule of 10” for pheochromocytoma, and does it still hold?

Medical students have memorized it for generations: about 10 percent of pheochromocytomas are bilateral, 10 percent sit outside the adrenal glands, 10 percent are malignant, 10 percent run in families, 10 percent occur in children, and 10 percent present without high blood pressure. It is tidy, memorable and, in parts, out of date.

The biggest correction concerns inheritance. The Endocrine Society clinical practice guideline states that at least one-third of patients with pheochromocytomas or paragangliomas carry an inherited disease-causing mutation, roughly triple the old figure. That is why the guideline recommends that all patients be engaged in shared decision-making about genetic testing, not just those with a family history or young age at diagnosis.

Terminology has tightened too. Tumors of the same cell type that arise outside the adrenal glands, along the chains of nerve tissue running from neck to pelvis, are now called paragangliomas rather than “extra-adrenal pheochromocytomas.” And malignancy is defined by the presence of spread to distant sites, not by how the tumor looks under the microscope, because no pathological feature reliably predicts which tumors will behave aggressively.

Why does a teaching mnemonic matter to someone facing surgery? Because each line changes the operation. Bilateral disease raises the question of cortical-sparing surgery. A hereditary syndrome may prompt imaging of the whole body before the first cut, so a second tumor is not discovered a year later. A tumor outside the adrenal gland requires a different surgical route entirely. The rule of 10 is best treated as a checklist of questions the team should have answered before scheduling, rather than as a set of odds.

What people often get wrong

“A tumor means cancer.” Most pheochromocytomas are not cancerous, according to MedlinePlus. The danger comes from what the tumor secretes, not from uncontrolled spread. Malignancy is diagnosed only when disease is found at distant sites.

“My blood pressure was normal at the clinic, so this can’t be urgent.” Pheochromocytomas often release hormone in episodes. A normal reading between episodes says little about what happens during one, or during an operation that squeezes the tumor.

“I feel fine, so I can skip the preparation medicines.” The alpha-blockade period exists to protect you on the operating table, not to treat how you feel today. Missing it removes the safety margin that makes this surgery routine. Talk to the prescriber about side effects rather than adjusting on your own.

“Keyhole surgery is minor surgery.” The incisions are small; the physiology is not. Adrenalectomy is a major operation regardless of approach.

“Once the tumor is out, I can stop all my blood pressure pills.” Some people need less medication, some need none, and some continue treatment for hypertension that predates the tumor. Only the prescribing clinician should make that call, guided by readings after surgery.

“Surgery is the end of the story.” Follow-up biochemical testing is recommended for years, and genetic results can affect relatives who have never had a symptom.

“Stress caused this.” Stress can provoke symptoms in someone who already has a tumor, but it does not create one. Pheochromocytomas arise from genetic changes in adrenal cells, inherited or acquired, not from a demanding job or a hard year. Nobody did this to themselves.

Questions to ask your care team

Bring paper. Consultations before adrenal surgery cover a lot of ground quickly, and the questions below are the ones that tend to matter most once the appointment is over. They are prompts for conversation, not a test of your team.

• Which tests confirmed the diagnosis, and did imaging check both adrenal glands and the rest of the body for a second tumor?
• Has genetic testing been discussed, and would the result change the surgical plan, for example toward a cortical-sparing operation?
• Which approach are you planning, keyhole through the abdomen, keyhole from the back, or open, and what would make you change your mind during the operation?
• How long will my preparation period last, and who do I call if the medicines make me too dizzy to function?
• Should I be adjusting my salt and fluid intake before surgery, and how?
• Where will I spend the first night, in a monitored unit or a regular ward, and what will be checked?
• If one gland is removed, how will you confirm the other is producing enough cortisol? If both, how will replacement work and what is the plan for illness days?
• Which of my current medicines change after surgery, and who reviews my blood pressure treatment?
• When is the follow-up hormone test, and how long will surveillance continue?
• What restrictions on lifting, driving and work should I expect, and for roughly how long?
• Who is my single point of contact if something feels wrong after I go home?

One more, often unasked: “What worries you most about my case?” Surgeons and anesthesiologists usually have a clear answer, and hearing it tells you what they are watching for and how to help.

When to call your doctor

Before surgery, while you are waiting and taking preparation medicines, treat the following as emergencies and call emergency services rather than the clinic: a sudden, severe headache unlike your usual ones; chest pain or a crushing sensation; a racing or violently irregular heartbeat with faintness; sudden weakness, trouble speaking or vision loss; or a blood pressure reading far above your usual range accompanied by any of these. These can signal a hypertensive crisis, and the NHS notes that untreated surges can lead to heart attack or stroke.

Contact the prescribing team the same day, without stopping the medicine yourself, if dizziness on standing is severe enough to cause a fall or a near-faint.

After surgery, call your surgical team promptly for: a fever, increasing redness, warmth or discharge at an incision, or a wound that opens; pain that worsens rather than eases day by day, or new abdominal swelling; vomiting that prevents you from keeping fluids or medicines down, which is especially urgent if you are on steroid replacement because it can precipitate adrenal crisis; profound weakness, confusion or fainting; shakiness, sweating and a racing heart that could indicate low blood sugar; or persistently very high or very low blood pressure readings at home.

Go to an emergency department or call emergency services for calf pain with swelling, sudden breathlessness, chest pain, or coughing up blood, all possible signs of a blood clot, and for any collapse or unresponsiveness.

When in doubt, call. A nurse who says “that sounds normal” costs you five minutes. A complication caught late costs far more, and no team will fault you for checking.

Frequently asked questions

What happens after a pheochromocytoma is removed?

Blood pressure usually falls and blood sugar can drop in the first day or two, so both are monitored closely, often in a high-dependency setting for the first night. Most people are walking within a day and home within a few days after keyhole surgery. Weeks later, a repeat metanephrine blood or urine test confirms that hormone excess has resolved, blood pressure medicines are reviewed by the prescriber, and long-term surveillance and genetic counseling are arranged.

Is adrenalectomy a major surgery even when done laparoscopically?

Yes. Laparoscopic adrenalectomy uses small incisions, but it still involves general anesthesia, entry into the abdomen or the space behind it, and removal of an organ next to the kidney, spleen or liver and major blood vessels. For pheochromocytoma the physiological demands are greater still, because the heart and vessels must cope with hormone surges and then abrupt withdrawal during the same operation. Small scars do not make it minor surgery.

What are the side effects of an adrenalectomy?

Common short-term effects include incision pain, shoulder-tip pain from surgical gas, bloating and fatigue lasting weeks. Risks include bleeding, infection, blood clots and injury to nearby organs. Pheochromocytoma adds blood pressure instability, low blood sugar and heart rhythm changes around the time of surgery. If both glands are removed, lifelong steroid replacement and the risk of adrenal crisis follow. Long-term surveillance for recurrence continues for years.

What is the rule of 10 for pheochromocytoma?

The rule of 10 is a traditional teaching mnemonic stating that about 10 percent of pheochromocytomas are bilateral, extra-adrenal, malignant, familial, found in children, or present without high blood pressure. It is partly outdated. The Endocrine Society guideline reports that at least one-third of patients carry an inherited mutation, and tumors outside the adrenal glands are now called paragangliomas. It remains useful as a checklist of questions to answer before surgery.

How long does pheochromocytoma surgery recovery usually take?

Recovery varies with the approach and the person. MedlinePlus describes a hospital stay of a few days after keyhole adrenalectomy and a longer stay after open surgery, with return to usual activities often within weeks for keyhole and several weeks or more for open operations. Fatigue commonly lingers. Lifting and driving restrictions are set by the surgical team, and these are typical ranges rather than guarantees.

Why do I need alpha-blockers before adrenal tumor surgery?

Alpha-blockers occupy the receptors that catecholamines use to constrict blood vessels, so the vessels relax and the circulation refills over one to two weeks. That preparation means less dramatic pressure spikes when the tumor is handled and a smaller drop when its vein is tied off. The Endocrine Society guideline recommends this blockade for most patients, with the specific medicine and duration decided by the prescribing clinician.

Will I need hormone replacement after one adrenal gland is removed?

Usually not. The remaining healthy adrenal gland normally produces enough cortisol and aldosterone for the body’s needs, and MedlinePlus notes that most people with one gland removed do not require lifelong replacement. The team may check cortisol levels afterward to be sure. Replacement becomes necessary when both glands are removed, or when the remaining gland is not functioning adequately, and in that case an illness-day plan is essential.

What is life after pheochromocytoma removal like for blood pressure?

Many people find their blood pressure is lower once the hormone source is gone, and prescriptions are often reduced by the prescriber. Others continue treatment because they also have underlying essential hypertension or vessel and kidney changes from years of exposure. Home readings recorded twice daily help the follow-up clinic adjust treatment safely. Any changes to medicines should come from the treating team, not from stopping pills on your own.

Can a pheochromocytoma come back after surgery?

It can, which is why follow-up does not end at the wound check. Recurrence may occur at the original site, on the opposite gland in hereditary conditions, or as a paraganglioma elsewhere, sometimes years later. The Endocrine Society guideline suggests annual biochemical testing for many patients, potentially lifelong, and more intensive surveillance for those with hereditary syndromes, large tumors or tumors outside the adrenal glands. Your team will tailor the schedule.

Should my family members be tested if I had a pheochromocytoma?

Possibly. Because at least one-third of patients carry an inherited mutation, the Endocrine Society guideline recommends that every patient be offered a discussion about genetic testing. If a mutation is identified, first-degree relatives can be offered testing and, if positive, screening before symptoms appear. Genetic counseling helps families understand what a result means and does not mean. The decision to test is personal and guided by the counseling team.

References

• Pheochromocytoma – MedlinePlus Medical Encyclopedia
• Adrenalectomy – MedlinePlus Medical Encyclopedia
• Phaeochromocytoma – NHS

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.