问题
单项选择题
A 35-year-old female client who complains of weight gain, facial hair, absent menstruation, frequent bruising, and acne is diagnosed with Cushing’s syndrome. Cushing’s syndrome is most likely caused by which of the following（）
A. An ectopic corticotropin-secreting tumor.
B. Adrenal carcinoma.
C. A corticotropin-secreting pituitary adenoma.
D. An inborn error of metabolisrn.
答案
参考答案：C
解析：
A corticotropin-secreting pituitary adenoma is the most common cause of Cushing’s syndrome in women ages 20 to 40. Ectopic corticotropin-secreting tumors are more common in older men and are often associated with weight loss. Adrenal carcinoma isn’t usually accompanied by hirsutism. A female with an inborn error of metabolism wouldn’t be menstruating.