After a positive biochemical test for pheochromocytoma, what is the next recommended step?

After a positive biochemical test for pheochromocytoma, what is the next recommended step?

• A. Imaging to localize the tumor
• B. Start chemotherapy
• C. Immediate surgery
• D. Observation only

Answer: (A)

Once pheochromocytoma is biochemically confirmed, the priority is to locate the tumor so it can be removed safely. Imaging to localize the lesion shows whether it’s adrenal or extra-adrenal, whether it’s unilateral or bilateral, and whether there’s any metastatic disease—information essential for planning the surgical approach and preoperative management. Start with high-resolution CT or MRI of the abdomen to localize the tumor, and if these are inconclusive or there’s suspicion of nonadrenal disease, functional imaging such as MIBG scintigraphy or PET can help pinpoint the lesion. Starting chemotherapy or operating immediately without knowing where the tumor is carries significant risks and isn’t appropriate, and observing without treatment would miss a potentially curable source of dangerous catecholamine surges. After the tumor is localized, preoperative alpha-adrenergic blockade and careful perioperative planning prepare the patient for safe surgical removal.

Once pheochromocytoma is biochemically confirmed, the priority is to locate the tumor so it can be removed safely. Imaging to localize the lesion shows whether it’s adrenal or extra-adrenal, whether it’s unilateral or bilateral, and whether there’s any metastatic disease—information essential for planning the surgical approach and preoperative management. Start with high-resolution CT or MRI of the abdomen to localize the tumor, and if these are inconclusive or there’s suspicion of nonadrenal disease, functional imaging such as MIBG scintigraphy or PET can help pinpoint the lesion. Starting chemotherapy or operating immediately without knowing where the tumor is carries significant risks and isn’t appropriate, and observing without treatment would miss a potentially curable source of dangerous catecholamine surges. After the tumor is localized, preoperative alpha-adrenergic blockade and careful perioperative planning prepare the patient for safe surgical removal.