question: Q:A 37-year-old woman comes to the physician for a 6-month history of headaches, anorexia, and vomiting. She has had a 10-kg (22-lb) weight loss during this period. She has type 1 diabetes mellitus for which she takes insulin. The patient's mother and sister have hypothyroidism. Her blood pressure is 80/60 mm Hg. Physical examination shows hyperpigmentation of the lips and oral mucosa. Serum studies show a parathyroid hormone level of 450 pg/mL and antibodies directed against 17α-hydroxylase. Which of the following is the most likely diagnosis?? 
  {'A': 'Multiple endocrine neoplasia type 2B', 'B': 'Sheehan syndrome', 'C': 'Multiple endocrine neoplasia type 2A', 'D': 'Autoimmune polyendocrine syndrome type 2', 'E': 'Cushing syndrome\n"'},