MCQ – 88792

Question

A 36-year-old HIV-positive man presents with persistent dry cough, fatigue, and low-grade fever. Physical examination shows marked pallor and respiratory distress. An X-ray film of the chest reveals diffuse, bilateral, interstitial infiltrates. Bronchoalveolar lavage demonstrates a foamy alveolar cast composed of small cysts (shown in the image). What is the most likely diagnosis?

A.

Adenocarcinoma

B.

Herpesvirus infection

C.

Human papillomavirus infection

D.

Pneumocystis carinii pneumonia

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