Organ System Pathology USMLE Step 1 Practice Question
A 29-year-old African American woman presents with a 3-week history of dry cough, fatigue, and eye pain. Physical examination reveals tender erythematous nodules on the shins and bilateral hilar lymphadenopathy on chest radiograph. Vital signs show BP 118/76 mmHg, HR 92 bpm, RR 18, temperature 37.8°C, and SpO2 98% on room air. Serum calcium is elevated at 11.2 mg/dL. There is no fever or night sweats. Which of the following is the most likely diagnosis?
Answer choices
- APneumocystis jirovecii pneumonia
- BIdiopathic pulmonary fibrosis
- CTuberculosis
- DSarcoidosisCorrect answer
- EBerylliosis
- FHistoplasmosis
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.