Histology USMLE Step 1 Practice Question
A 32-year-old man presents with infertility and decreased libido. Vital signs: BP 118/76, HR 72, RR 14, Temp 37°C. Semen analysis reveals markedly decreased sperm motility with normal count. Testicular biopsy shows normal spermatogenesis. Transrectal ultrasound excludes ductal obstruction. He denies fever or genitourinary infections. An epididymal biopsy would most likely demonstrate which histologic finding?
Answer choices
- AStratified squamous epithelium with mucous glands
- BSimple columnar epithelium with cilia and highly folded mucosa
- CPseudostratified epithelium with stereociliaCorrect answer
- DSimple cuboidal epithelium surrounding colloid-filled follicles
- ETransitional epithelium with umbrella cells
- FCiliated pseudostratified epithelium with intracytoplasmic lipid inclusions
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