Esophageal anthracosis complicated by mediastinal tuberculous lymphadenitis presenting as submucosal tumor

Anthracosis is a black pigment discoloration located mainly in the bronchi because of inhalation of dust or particulates. 1 Extrapulmonary anthracosis that includes the esophagus is very rare, and its etiology is not well established. 2,3 We present a case of esophageal anthracosis presenting as a submucosal tumor (SMT) complicated by mediastinal tuberculous lymphadenitis.