Fig. 1From: Clinical characteristics and treatment outcomes of primary malignant melanoma of esophagus: a single center experienceRepresentative images of melanotic and amelanotic type of primary malignant melanoma of esophagus. It typically presents as dark pigmented mass at lower esophagus (A). However, the absence of dark pigmentation in endoscopic examination does not exclude the possibility of malignant melanoma of esophagus (B)Back to article page