Asthma USMLE Step 1 Practice Question
A 61-year-old never-smoker woman presents with progressive cough and 8-pound weight loss over 3 months. Vital signs: BP 128/76, HR 92, RR 18, Temp 98.6°F, SpO2 98% on room air. CT chest reveals a peripheral 2.2-cm mass adjacent to left upper lobe scarring. Transbronchial biopsy demonstrates glandular differentiation with abundant mucin production. She denies hemoptysis and fever. She takes only atorvastatin. Which diagnosis best explains these findings?
Answer choices
- ASquamous cell carcinoma
- BSmall cell carcinoma
- CAdenocarcinomaCorrect answer
- DLarge cell carcinoma
- EMesothelioma
- FBronchioloalveolar carcinoma
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