A 38-year-old woman presents with episodic pounding headaches, diaphoresis, and palpitations triggered during abdominal surgery. Vital signs show BP 188/112 mmHg, HR 118/min, RR 20/min, temperature 37.2°C, and SpO2 98% on room air. She denies chest pain. Laboratory studies reveal elevated 24-hour urinary fractionated metanephrines (640 pg/mL, normal <90). Abdominal CT imaging demonstrates a 3-cm left adrenal mass. Which tumor is most likely responsible for her presentation?
- A)Parathyroid chief cell adenoma
- B)Thyroid follicular adenoma
- C)Chromaffin cell tumor of the adrenal medullaGABARITO
- D)Corticotroph adenoma of the pituitary
- E)Aldosterone producing adrenal cortical adenoma
Explicação
Pheochromocytoma is a catecholamine secreting tumor of chromaffin cells in the adrenal medulla. Episodic headache, sweating, palpitations, and elevated metanephrines are classic. These tumors may be associated with MEN 2 syndromes. Ver explicação completa e trilha adaptativa →