Abstract
A dark-pigmented (black) esophagus is a rare observation during the course of upper endoscopy. The differential diagnosis of a black esophagus includes acute necrotizing esophagitis, exogenous dye ingestion, lye ingestion, malignant melanoma, melanosis, and pseudomelanosis esophagi. Many of these conditions are suggested by the history and associated endoscopic findings. In most patients, a biopsy is needed to establish a definitive diagnosis and explanation for the black-appearing esophagus. We describe a patient with a black esophagus encountered during routine endoscopy. The clinical, endoscopic, and histopathological features of this unusual finding are presented, along with a review of the literature.
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