Diagnosing Extrapulmonary Sarcoidosis and the Implications of Diagnosis on Military Service.

Sarcoidosis is a systemic inflammatory disease that can cause granulomatous infiltration of almost all organs and tissues which allows for a wide variety of presentations that may overlap with other disease processes. Renal sarcoidosis is a much rarer site of extrapulmonary involvement and may present as hypercalcemia, tubular or glomerular dysfunction, and/or granulomatous interstitial nephritis. Prompt diagnosis of sarcoidosis is crucial for initiating appropriate treatment and avoiding organ dysfunction. Herein, we describe a case of an armed forces service member who developed extrapulmonary sarcoidosis and renal sarcoidosis with acute complications refractory to glucocorticoids requiring adalimumab. The case highlights and emphasizes a rare manifestation of extrapulmonary sarcoidosis, the importance of avoiding premature closure of the differential diagnosis to avoid diagnostic delay and treatment imitation, and the unique clinical reasoning that occurs in active-duty personnel where diagnoses and subsequent treatments can have career implications and affect the ability of the service member to maintain the ability to deploy worldwide.