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Zorluk: Çok zorBreast and Endocrine Surgery

Match the following clinical presentations of patients with adrenal masses or adrenal dysfunction to the most appropriate next step in management or surgical intervention.

  • A 55-year-old patient with a 6.5-cm right adrenal mass. Unenhanced CT Hounsfield units (HU) = 35. Biochemical evaluation for hypercortisolism, primary aldosteronism, and pheochromocytoma is normal.Open right adrenalectomy due to high risk of adrenocortical carcinoma
  • A 45-year-old patient with resistant hypertension and hypokalemia. CT abdomen is normal. Adrenal vein sampling (AVS) Aldosterone/Cortisol ratios: Right = 15, Left = 12, Inferior Vena Cava (IVC) = 10.Medical management with a mineralocorticoid receptor antagonist (e.g., spironolactone)
  • A 45-year-old patient with resistant hypertension and hypokalemia. CT shows a 1.5-cm left adrenal nodule. AVS Aldosterone/Cortisol ratios: Left = 25, Right = 2, IVC = 5.Laparoscopic left adrenalectomy
  • A 60-year-old patient with an incidentally discovered 3.5-cm left adrenal mass. Unenhanced CT HU = 5. Morning cortisol after 1-mg dexamethasone suppression is 1.1 µg/dL. Plasma metanephrines are normal.Observation with serial clinical and biochemical follow-up
  • A 40-year-old patient with episodic severe headaches and tachycardia. CT abdomen shows a 4.5-cm right adrenal mass with unenhanced HU = 35. Plasma free metanephrines are markedly elevated.Preoperative alpha-adrenergic blockade, followed by beta-adrenergic blockade, then laparoscopic right adrenalectomy

Cevap

The presentations map specifically to their optimal management paths: suspicious masses require open surgery, non-functioning adenomas require observation, bilateral aldosteronism is managed medically, unilateral aldosteronomas are removed laparoscopically, and pheochromocytomas require sequential medical blockade prior to laparoscopic removal.
Optimal management of adrenal lesions depends on differentiating benign adenomas from adrenocortical carcinoma (using size cutoffs and unenhanced HU < 10) and identifying hormone hypersecretion. Primary aldosteronism requires AVS to definitively differentiate unilateral from bilateral disease. Pheochromocytoma requires proper preoperative sequential medical blockade.

Adım Adım Çözüm

1
Evaluate the 6.5-cm, HU=35 non-functioning mass.
Identify high risk for adrenocortical carcinoma.
Size > 4 cm and unenhanced HU > 10 indicate a suspicious lesion requiring open surgical resection.
2
Calculate the AVS lateralization index for the patient with normal CT.
Ratio = 1.25, indicating bilateral hyperplasia.
A lateralization index < 3 confirms bilateral disease, which is treated medically.
3
Calculate the AVS lateralization index for the patient with the 1.5-cm left nodule.
Ratio = 12.5, indicating a unilateral left aldosteronoma.
A lateralization index > 4 confirms unilateral disease, making the patient a candidate for laparoscopic adrenalectomy.
4
Evaluate the 3.5-cm, HU=5 non-functioning mass.
Identify a benign, non-functioning lipid-rich adenoma.
Size < 4 cm, HU < 10, and negative biochemical workup require only serial observation.
5
Determine the preoperative management for the patient with elevated metanephrines.
Identify pheochromocytoma requiring sequential blockade.
Alpha-blockade must be initiated before beta-blockade to prevent unopposed alpha-adrenergic stimulation.

Anahtar Kavram

Surgical management of adrenal masses requires integration of tumor size, unenhanced Hounsfield units, biochemical functionality, and adrenal vein sampling lateralization.
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Breast and Endocrine Surgery

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