BASIC INFORMATION

Date & Time: 18 June 2026, 7:03:52 PM Indian Standard Time

Lecture Handout Prepared from the Teaching Session by: Dr. R. K. Mishra

SUMMARY

Adrenalectomy is the surgical removal of one or both adrenal glands and is performed for selected adrenal disorders, particularly those associated with hormonal hypersecretion or adrenal masses. Approximately 3,000 adrenalectomies are performed annually in the United States. The laparoscopic retroperitoneoscopic approach is emphasized as a preferred minimally invasive technique because it is associated with reduced recovery time, a typical hospital stay of 1–2 days, and a complication rate of approximately 5–10%.

Adrenal disorders commonly arise from disturbances in hormone production, including excess cortisol in Cushing syndrome and excess aldosterone in primary aldosteronism. These hormonal abnormalities can produce hypertension, hypokalemia, glucose intolerance, metabolic alkalosis, osteoporosis, and characteristic physical findings such as truncal obesity and purple striae. The hypothalamic-pituitary-adrenal axis is central to adrenal physiology, and disruption of feedback regulation contributes to disease development.

Diagnosis requires a combination of clinical assessment, laboratory testing, and imaging. The dexamethasone suppression test has a reported sensitivity of 95% and specificity of 90% for Cushing syndrome using a cortisol cutoff of 5 micrograms per deciliter. Computed tomography is the preferred imaging modality for adrenal masses, with a sensitivity of 95% and specificity of 90%. Fine needle aspiration biopsy may assist in diagnosing adrenal malignancy, with an accuracy of 90% and a complication rate of 1–2%.

Management is multidisciplinary and includes surgeons, endocrinologists, and radiologists. Surgical removal of the affected adrenal gland is a key management strategy, particularly in primary aldosteronism, where surgical success is reported at 90%. Medical therapy may be required for hormonal control, including ketoconazole for Cushing syndrome and hydrocortisone for adrenal insufficiency or adrenal crisis. Special considerations include pregnancy, chronic kidney disease, hepatic impairment, and individualized dose adjustment.

Complications discussed include adrenal crisis, hypertension, hypokalemia, adrenal insufficiency after adrenalectomy, and adrenal malignancy. Adrenal crisis requires urgent recognition and treatment with hydrocortisone. Patient education, regular follow-up, monitoring of blood pressure and electrolytes, medication adherence, and recognition of warning signs are essential for safe outcomes.

KEY KNOWLEDGE POINTS

• Adrenalectomy involves removal of one or both adrenal glands.

• Laparoscopic retroperitoneoscopic adrenalectomy is a minimally invasive approach with shorter recovery and hospital stay.

• Approximately 3,000 adrenalectomies are performed annually in the United States.

• Adrenal incidentalomas occur in approximately 4.2% of patients undergoing abdominal computed tomography scans.

• The global incidence of adrenal disorders is estimated at approximately 1 in 10,000 people.

• Adrenal disorders frequently involve hormonal imbalance, especially cortisol and aldosterone excess.

• Cushing syndrome is characterized by excess cortisol production.

• Primary aldosteronism is characterized by excess aldosterone production.

• The dexamethasone suppression test is an important diagnostic test for Cushing syndrome.

• Computed tomography has high sensitivity and specificity for detecting adrenal masses.

• Fine needle aspiration biopsy may be useful for diagnosing adrenal malignancy.

• Laparoscopic adrenalectomy has a complication rate of 5–10% and a mortality rate of 0.5–1%.

• Hospital stay after laparoscopic adrenalectomy is usually 1–2 days.

• Recovery time is usually 1–2 weeks.

• Adrenal insufficiency after adrenalectomy occurs in 10–20% of patients.

• Adrenal crisis is a life-threatening condition requiring urgent hydrocortisone therapy.

• Multidisciplinary care involving surgery, endocrinology, and radiology is recommended.

• Osilodrostat is an emerging therapy for Cushing syndrome.

• Patient education and regular monitoring are essential to reduce complications.

INTRODUCTION

The adrenal glands are paired endocrine organs located superior to the kidneys. They produce hormones essential for regulation of metabolism, blood pressure, electrolyte balance, and stress response, including cortisol, aldosterone, and adrenaline. Disorders of the adrenal glands may lead to either hormonal excess or deficiency and can present with significant systemic manifestations.

Adrenalectomy is an important surgical procedure in the management of adrenal disorders. Surgical intervention is commonly indicated when there is hormonal hypersecretion, suspicion of malignancy, or clinically significant adrenal mass. The lecture emphasizes laparoscopic retroperitoneoscopic adrenalectomy as a preferred minimally invasive technique because of reduced recovery time, limited hospital stay, and acceptable complication rates.

The clinical importance of adrenal disorders lies in their potentially serious presentations, including severe hypertension, hypokalemia, adrenal crisis, and adrenal malignancy. Accurate diagnosis, appropriate patient selection, meticulous perioperative planning, and multidisciplinary management are essential for optimal outcomes.

LEARNING OBJECTIVES

• Understand the epidemiology, pathophysiology, and clinical presentation of adrenal disorders requiring evaluation for adrenalectomy.

• Describe the diagnostic approach to adrenal disorders, including laboratory testing, imaging, and biopsy where appropriate.

• Explain the role of laparoscopic retroperitoneoscopic adrenalectomy in the management of adrenal disease.

• Recognize major complications including adrenal crisis, adrenal insufficiency, hypertension, and hypokalemia.

• Identify key patient selection, medicolegal, and safety considerations in adrenal surgery.

CORE CONTENT

1. Overview of Adrenalectomy

1.1 Definition

Adrenalectomy is a surgical procedure involving removal of one or both adrenal glands. It is performed for adrenal disorders associated with hormone excess, adrenal masses, or suspected malignancy.

1.2 Surgical Approach

The lecture highlights laparoscopic retroperitoneoscopic adrenalectomy as a preferred minimally invasive approach. This technique is associated with:

• Reduced recovery time

• Hospital stay of 1–2 days

• Recovery period of 1–2 weeks

• Complication rate of 5–10%

• Mortality rate of 0.5–1%

1.3 Procedural Volume and Cost

Approximately 3,000 adrenalectomies are performed annually in the United States. The average cost of laparoscopic adrenalectomy is approximately 20,000 dollars per procedure, with a reported cost-effectiveness ratio of 10,000 dollars per quality-adjusted life year.

2. Epidemiology of Adrenal Disorders

2.1 Incidence

The estimated global incidence of adrenal disorders is approximately 1 in 10,000 people. Adrenal incidentalomas are detected in approximately 4.2% of patients undergoing abdominal computed tomography scans.

2.2 Age and Sex Distribution

Adrenal disorders may occur across a wide age range, from 20 to 80 years. Peak incidence occurs between 40 and 60 years. The sex distribution is slightly female predominant, with a male-to-female ratio of approximately 1:1.2.

2.3 Risk Factors

Modifiable risk factors include:

• Hypertension, relative risk 2.5

• Obesity, relative risk 1.8

• Family history, relative risk 3.0

Non-modifiable risk factors include:

• Age, relative risk 1.5 per decade

• Female sex, relative risk 1.2

• Genetic mutations, relative risk 5.0

3. Adrenal Physiology and Pathophysiology

3.1 Hormonal Function of the Adrenal Glands

The adrenal glands produce several hormones, including:

• Cortisol

• Aldosterone

• Adrenaline

These hormones regulate blood pressure, electrolyte balance, metabolism, and stress response.

3.2 Hypothalamic-Pituitary-Adrenal Axis

Hormone production is regulated by the hypothalamic-pituitary-adrenal axis through feedback interactions between the hypothalamus, pituitary gland, and adrenal glands. In adrenal disorders, this feedback loop is disrupted, leading to excess or deficient hormone production.

3.3 Cushing Syndrome

Cushing syndrome is caused by overproduction of cortisol. Clinical consequences include:

• Hypertension

• Glucose intolerance

• Osteoporosis

• Weight gain

• Truncal obesity

• Purple striae

3.4 Primary Aldosteronism

Primary aldosteronism is characterized by excess aldosterone secretion. Clinical consequences include:

• Hypertension

• Hypokalemia

• Metabolic alkalosis

Mutations in the KCNJ5 gene are reported in 40% of patients with primary aldosteronism.

4. Clinical Presentation

4.1 Cushing Syndrome

The classic presentation of Cushing syndrome includes:

• Weight gain in 80% of patients

• Hypertension in 70% of patients

• Glucose intolerance in 60% of patients

• Truncal obesity

• Purple striae

Purple striae are associated with excess cortisol, which causes skin thinning and fragility.

4.2 Primary Aldosteronism

The classic presentation of primary aldosteronism includes:

• Hypertension in 90% of patients

• Hypokalemia in 50% of patients

• Metabolic alkalosis in 40% of patients

4.3 Atypical Presentations

Atypical symptoms may occur, particularly in elderly patients, diabetic patients, and immunocompromised patients. These symptoms include:

• Fatigue

• Weakness

• Weight loss

4.4 Red Flag Findings

Red flags requiring immediate action include:

• Severe hypertension

• Severe hypokalemia

• Adrenal crisis

These conditions may be life-threatening if not promptly treated.

5. Diagnostic Evaluation

5.1 Diagnostic Algorithm

The diagnostic approach begins with:

• Thorough medical history

• Physical examination

• Laboratory testing

• Imaging studies

5.2 Laboratory Tests

Important laboratory tests include:

• Dexamethasone suppression test

• Cortisol measurement

• Aldosterone measurement

5.3 Reference Ranges

The lecture provides the following reference ranges:

• Cortisol: 5–20 micrograms per deciliter

• Aldosterone: 2–9 nanograms per deciliter

5.4 Diagnostic Performance

Dexamethasone suppression test:

• Sensitivity: 95%

• Specificity: 90%

• Cortisol cutoff for Cushing syndrome: 5 micrograms per deciliter

Cortisol measurement:

• Sensitivity: 80%

• Specificity: 90%

Aldosterone measurement:

• Sensitivity: 90%

• Specificity: 80%

5.5 Imaging

Computed tomography is the modality of choice for detecting adrenal masses and guiding surgical management.

Computed tomography performance:

• Sensitivity: 95%

• Specificity: 90%

Magnetic resonance imaging may also be used in evaluation.

5.6 Fine Needle Aspiration Biopsy

Fine needle aspiration biopsy may be used in selected cases to diagnose adrenal malignancy.

Performance and risk:

• Accuracy: 90%

• Complication rate: 1–2%

5.7 Differential Diagnosis

Differential diagnoses include other causes of hypertension and hypokalemia, such as:

• Renal disease

• Hyperthyroidism

5.8 Scoring Systems

The lecture mentions the Wells score as a validated scoring system for assessing the likelihood of adrenal malignancy, with a score of 2 or more indicating high likelihood. The Cushing Syndrome Severity Score may help assess hormonal imbalance and guide management.

6. Management and Treatment

6.1 Multidisciplinary Care

Management of adrenal disorders requires a multidisciplinary approach involving:

• Surgery

• Endocrinology

• Radiology

The Endocrine Society recommends thorough evaluation of all patients with adrenal incidentalomas, including laboratory testing and imaging studies to determine hormonal hypersecretion.

6.2 Surgical Management

Surgical removal of the affected gland is a primary management strategy for appropriate adrenal disorders. The American Association of Clinical Endocrinologists recommends surgical removal of the affected adrenal gland in patients with primary aldosteronism, with a reported success rate of 90%.

6.3 Acute Management of Adrenal Crisis

Adrenal crisis requires emergency stabilization and immediate treatment.

Hydrocortisone regimen discussed:

• Hydrocortisone 100–200 mg

• Frequency: every 6–8 hours

Monitoring parameters include:

• Blood pressure

• Electrolyte levels

• Glucose levels

6.4 Management of Severe Hypertension

In severe hypertension, the lecture mentions nifedipine.

Dose discussed:

• Nifedipine 10–20 mg orally

• Frequency: every 6–8 hours

6.5 Pharmacotherapy for Cushing Syndrome

Ketoconazole is discussed as a first-line medication for inhibiting excess cortisol production in Cushing syndrome.

Dose discussed:

• Ketoconazole 200–400 mg orally

• Frequency: every 12 hours

Expected response timeline:

• Several weeks to several months

Monitoring parameters include:

• Cortisol levels

• Blood pressure

• Glucose levels

The lecture cites clinical trial data demonstrating a response rate of 80% and remission rate of 50%.

6.6 Adrenal Insufficiency

Adrenal insufficiency after adrenalectomy is reported in 10–20% of patients. The risk of adrenal crisis is 1–2%.

Hydrocortisone replacement dose discussed:

• Hydrocortisone 15–20 mg per day

• Frequency: 2–3 times per day

7. Special Patient Groups

7.1 Pregnancy

The safety category for medications used in adrenal disorders during pregnancy is described as typically C or D. Dose adjustment of 50–75% is recommended.

Preferred agent discussed:

• Hydrocortisone 10–20 mg orally

• Frequency: every 12 hours

7.2 Chronic Kidney Disease

Dose adjustment according to glomerular filtration rate was discussed as follows:

• GFR 30–50 mL/min: 50–75% of normal dose

• GFR 15–30 mL/min: 25–50% of normal dose

• GFR less than 15 mL/min: 10–25% of normal dose

7.3 Hepatic Impairment

Dose adjustment according to Child-Pugh class was discussed as follows:

• Child-Pugh A: 100% of normal dose

• Child-Pugh B: 50–75% of normal dose

• Child-Pugh C: 25–50% of normal dose

8. Prognosis

8.1 Adrenal Cancer

The five-year survival rate for adrenal cancer is 50–60%, with a median survival time of 2–3 years.

8.2 Mortality Data

The lecture provides the following mortality data for adrenal disorders:

• Thirty-day mortality: 1–5%

• One-year mortality: 5–10%

• Five-year mortality: 10–20%

8.3 Poor Prognostic Factors

Factors associated with poor outcome include:

• Older age

• Presence of comorbidities

• Delayed diagnosis

8.4 Escalation of Care

Referral to a specialist is required in cases of:

• Adrenal crisis

• Severe hypertension

• Adrenal malignancy

Intensive care unit admission criteria include:

• Adrenal crisis

• Severe hypertension

• Respiratory failure

9. Recent Advances and Emerging Therapies

9.1 New Drug Therapy

Osilodrostat is discussed as an emerging therapy for Cushing syndrome. It has been shown to reduce cortisol levels and improve symptoms.

9.2 Updated Guidelines

Updated guidelines from the Endocrine Society for diagnosis and treatment of adrenal disorders were discussed.

9.3 Novel Biomarkers

Measurement of cortisol and aldosterone levels is emphasized as useful in diagnosis and monitoring.

9.4 Precision Medicine

Genetic testing may assist in guiding treatment and predicting response to therapy.

9.5 Emerging Surgical Techniques

Robotic surgery is discussed as an emerging surgical technique that may improve outcomes and reduce complications.

10. Patient Education and Counseling

10.1 Key Patient Messages

Patients should understand the importance of:

• Adherence to medication regimens

• Monitoring blood pressure

• Monitoring electrolyte levels

• Seeking urgent medical attention in adrenal crisis

10.2 Medication Adherence

Strategies to improve medication adherence include:

• Pillboxes

• Reminder systems

10.3 Warning Signs Requiring Immediate Medical Attention

Patients should seek urgent care for:

• Severe hypertension

• Hypokalemia

• Symptoms suggestive of adrenal crisis

10.4 Follow-Up Schedule

Follow-up recommendations include:

• Regular endocrinology appointments every 3–6 months

• Regular laboratory testing every 1–3 months

SURGICAL PEARLS

• Carefully evaluate all adrenal incidentalomas with laboratory testing and imaging before deciding on surgery.

• Do not miss primary aldosteronism in patients with hypertension and hypokalemia; failure to measure aldosterone is a common diagnostic pitfall.

• Distinguish Cushing syndrome from primary aldosteronism by identifying the dominant hormone excess: cortisol in Cushing syndrome and aldosterone in primary aldosteronism.

• Recognize adrenal crisis early; adrenal insufficiency is a must-not-miss diagnosis.

• Use computed tomography as the main imaging modality for adrenal masses because of its high sensitivity and specificity.

• Anticipate adrenal insufficiency after adrenalectomy and monitor appropriately.

• Multidisciplinary planning with endocrinology, radiology, and surgery improves safety and individualizes care.

• In patients with severe hypertension, hypokalemia, or adrenal crisis, escalate care without delay.

ANESTHETIC AND PHYSIOLOGICAL CONSIDERATIONS

The lecture emphasizes physiological considerations related to adrenal hormone excess and deficiency. Adrenal disorders can significantly affect blood pressure, electrolyte balance, glucose metabolism, and stress response.

Key physiological concerns include:

• Hypertension due to cortisol or aldosterone excess

• Hypokalemia in primary aldosteronism

• Glucose intolerance in Cushing syndrome

• Adrenal insufficiency after adrenalectomy

• Adrenal crisis requiring urgent hydrocortisone therapy

Monitoring parameters discussed include:

• Blood pressure

• Electrolyte levels

• Glucose levels

• Cortisol levels where appropriate

COMPLICATIONS AND THEIR MANAGEMENT

Intraoperative

The lecture does not provide specific intraoperative technical complications. General operative safety points include careful patient selection, adequate preoperative biochemical diagnosis, and multidisciplinary planning.

Early Postoperative

Adrenal insufficiency

• Incidence after adrenalectomy: 10–20%

• Risk of adrenal crisis: 1–2%

• Management: hydrocortisone replacement, 15–20 mg per day in 2–3 divided doses

Adrenal crisis

• Incidence: 1–2%

• Mortality: 10–20%

• Management: hydrocortisone 100–200 mg every 6–8 hours with monitoring of blood pressure, electrolytes, and glucose

Hypertension

• Incidence in adrenal disorders: 70–90%

• Management includes antihypertensive therapy when severe; nifedipine 10–20 mg orally every 6–8 hours was discussed

Hypokalemia

• Incidence: 30–50%

• Requires prompt recognition and correction with monitoring

Late Postoperative

Persistent or recurrent endocrine abnormality

Patients require continued endocrine follow-up and serial laboratory monitoring.

Adrenal malignancy prognosis

• Five-year survival: 50–60%

• Median survival: 2–3 years

Long-term monitoring

• Endocrinology review every 3–6 months

• Laboratory testing every 1–3 months

MEDICOLEGAL AND PATIENT SELECTION CONSIDERATIONS

Appropriate patient selection is essential in adrenal surgery. Every adrenal incidentaloma should undergo thorough evaluation to determine hormonal activity and assess malignant potential. Failure to diagnose hormonal hypersecretion, particularly primary aldosteronism or Cushing syndrome, may expose the patient to preventable morbidity.

Important safety and decision-making points include:

• Document clinical presentation, hormonal workup, and imaging findings before surgery.

• Evaluate for cortisol and aldosterone excess when clinically indicated.

• Recognize that severe hypertension, hypokalemia, and adrenal crisis require urgent intervention.

• Use a multidisciplinary approach involving surgery, endocrinology, and radiology.

• Discuss expected outcomes, complication rates, hospital stay, recovery time, and risk of adrenal insufficiency with the patient.

• Ensure follow-up planning for endocrine monitoring after adrenalectomy.

• Escalate care promptly in suspected adrenal crisis, adrenal malignancy, severe hypertension, or respiratory failure.

SUMMARY AND TAKE-HOME MESSAGES

• Laparoscopic retroperitoneoscopic adrenalectomy is a minimally invasive approach associated with short hospital stay, rapid recovery, and acceptable complication rates.

• Adrenal disorders require careful biochemical and radiological evaluation before surgical decision-making.

• Cushing syndrome is caused by cortisol excess, while primary aldosteronism is caused by aldosterone excess.

• Computed tomography is the preferred imaging modality for adrenal masses, with high sensitivity and specificity.

• Adrenal crisis, severe hypertension, and hypokalemia are red flags requiring immediate action.

• Adrenal insufficiency after adrenalectomy must be anticipated and treated with hydrocortisone when indicated.

• Multidisciplinary care and patient education are essential for safe, evidence-based management.

MULTIPLE CHOICE QUESTIONS (MCQs)

1. What is adrenalectomy?

A. Surgical removal of the thyroid gland

B. Surgical removal of one or both adrenal glands

C. Surgical removal of the pancreas

D. Surgical removal of the spleen

Correct Answer: B

2. Which adrenalectomy approach was emphasized as preferred because of its minimally invasive nature?

A. Open transperitoneal adrenalectomy

B. Laparoscopic retroperitoneoscopic adrenalectomy

C. Thoracoabdominal adrenalectomy

D. Percutaneous adrenal ablation

Correct Answer: B

3. Approximately how many adrenalectomies are performed annually in the United States?

A. 300

B. 1,000

C. 3,000

D. 30,000

Correct Answer: C

4. What is the typical hospital stay after laparoscopic adrenalectomy according to the lecture?

A. Same-day discharge only

B. 1–2 days

C. 5–7 days

D. 10–14 days

Correct Answer: B

5. What is the reported complication rate for laparoscopic adrenalectomy?

A. 1–2%

B. 5–10%

C. 20–30%

D. 40–50%

Correct Answer: B

6. What is the approximate incidence of adrenal incidentalomas in patients undergoing abdominal CT scans?

A. 0.4%

B. 4.2%

C. 14.2%

D. 42%

Correct Answer: B

7. Which hormone is overproduced in Cushing syndrome?

A. Aldosterone

B. Cortisol

C. Thyroxine

D. Insulin

Correct Answer: B

8. Which hormone is overproduced in primary aldosteronism?

A. Cortisol

B. Aldosterone

C. Growth hormone

D. Prolactin

Correct Answer: B

9. Which clinical feature is classically associated with primary aldosteronism?

A. Hypokalemia

B. Hypercalcemia

C. Bradycardia

D. Hypoglycemia

Correct Answer: A

10. What is the cortisol cutoff discussed for the dexamethasone suppression test in diagnosing Cushing syndrome?

A. 1 microgram per deciliter

B. 3 micrograms per deciliter

C. 5 micrograms per deciliter

D. 20 micrograms per deciliter

Correct Answer: C

11. What is the sensitivity of the dexamethasone suppression test discussed in the lecture?

A. 50%

B. 70%

C. 80%

D. 95%

Correct Answer: D

12. What is the imaging modality of choice for detecting adrenal masses according to the lecture?

A. Plain radiography

B. Computed tomography

C. Echocardiography

D. Barium study

Correct Answer: B

13. What is the sensitivity of CT scans for detecting adrenal masses as discussed?

A. 60%

B. 75%

C. 85%

D. 95%

Correct Answer: D

14. What is the reported accuracy of fine needle aspiration biopsy for diagnosing adrenal malignancy?

A. 50%

B. 70%

C. 90%

D. 100%

Correct Answer: C

15. Which condition is described as a must-not-miss diagnosis in adrenal crisis?

A. Hyperthyroidism

B. Adrenal insufficiency

C. Renal colic

D. Cholecystitis

Correct Answer: B

16. What hydrocortisone dose was discussed for adrenal crisis?

A. 5–10 mg once daily

B. 15–20 mg per day

C. 100–200 mg every 6–8 hours

D. 500 mg once weekly

Correct Answer: C

17. What is the recommended daily hydrocortisone dose discussed for adrenal insufficiency?

A. 1–2 mg per day

B. 5 mg per week

C. 15–20 mg per day

D. 100–200 mg per day indefinitely

Correct Answer: C

18. Which medication was discussed as first-line pharmacotherapy for Cushing syndrome?

A. Nifedipine

B. Ketoconazole

C. Insulin

D. Levothyroxine

Correct Answer: B

19. Which emerging therapy was discussed for Cushing syndrome?

A. Osilodrostat

B. Warfarin

C. Metformin

D. Amiodarone

Correct Answer: A

20. What is a common diagnostic pitfall in primary aldosteronism?

A. Failure to measure aldosterone levels

B. Overuse of chest radiography

C. Failure to measure serum amylase

D. Misdiagnosis as appendicitis

Correct Answer: A

MOTIVATIONAL MESSAGE FROM DR. R. K. MISHRA

“Precision in surgery begins long before the incision; it begins with disciplined evaluation, sound judgment, and respect for patient safety.”

My best wishes to all postgraduate surgeons and gynecologists. Continue to learn with dedication, operate with responsibility, and place patient welfare at the center of every decision.