A 40-year-old woman presents with erythema nodosum, bilateral hilar lymphadenopathy on chest radiograph, and arthralgias. Lung examination is clear. No pulmonary infiltrates are visible. What is the Schewing radiographic stage of sarcoidosis?
- A Stage I ✓
- B Stage 0
- C Stage II
- D Stage III
Correct answer: A. Stage I
Explanation
Stage I sarcoidosis is defined as bilateral hilar lymphadenopathy without pulmonary parenchymal infiltrates. Stage II adds pulmonary infiltrates, Stage III shows infiltrates without hilar lymphadenopathy, and Stage IV shows pulmonary fibrosis. This patient has Lofgren syndrome, which is associated with acute sarcoidosis and typically presents as Stage I.
Reference: Harrison's Principles of Internal Medicine, 21st ed.
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