Not all that is miliary is tuberculosis: metastatic medullary thyroid carcinoma mimicking miliary tuberculosis

Abstract

Medullary thyroid carcinoma (MTC) typically manifests as a solitary thyroid nodule, and a miliary pattern on conventional chest imaging is not commonly observed. Here, we report a 58-year-old woman with constitutional symptoms, and innumerable small nodules on chest imaging, mimicking miliary tuberculosis. Pathologic findings confirmed a diagnosis of metastatic MTC.