A 35-Year-Old Man Comes to the Office Due to a Progressive

A 35-year-old man comes to the office due to a progressive increase in breast size over the past 6 months.  He is sexually active, has no chronic medical conditions, and takes no medications.  The patient does not use tobacco, alcohol, or illicit drugs.  Vital signs are normal.  BMI is 28 kg/m².  Gynecomastia with mild bilateral breast tenderness is present.  Genitourinary examination reveals a 1-cm nodule in the right testis.  The examination is otherwise normal.  Laboratory results are as follows: Which of the following is the most likely diagnosis in this patient?

A) Choriocarcinoma
B) Leydig cell tumor
C) Seminoma
D) Teratoma
E) Yolk sac tumor

Correct Answer:

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