Primary malignant melanoma of the esophagus is an extremely rare disease which counts for approximately 0.1-0.2% of all esophageal malignancies. It is also a very aggressive disease with a poor prognosis, with its 5yr survival rate ranging from 2.2% -...
Primary malignant melanoma of the esophagus is an extremely rare disease which counts for approximately 0.1-0.2% of all esophageal malignancies. It is also a very aggressive disease with a poor prognosis, with its 5yr survival rate ranging from 2.2% - 37.5%. Here we report a case of primary malignant melanoma of the esophagus in a patient whose diagnosis was made relatively early and thus total resection by an Ivor Lewis procedure was possible. A 51 year old Asian woman visited our hospital with epigastric discomfort. The patient had no noticeable medical history. She complained of mild nausea and dyspepsia, but there was no vomiting or weight loss. Physical examination showed no palpable lymph nodes in the head and neck region. There was no tenderness or rebound tenderness on the abdomen. For evaluation of her upper gastrointestinal symptoms, she had the upper endoscopy done. Endoscopy identifi ed a few dark pigmented, polypoid lesions scattered from 22cm to 30cm from the incisor tooth. The lesions were various in size, ranging from 0.2cm to 4-5cm and were fl at, slightly elevated with a irregular base. Biopsy done from two spots showed a well demarcated, slightly elevated and black pigmented tumor. For stage work-up, additional examinations were performed. The chest CT showed no abnormal thickening of the esophagus or any enlarged lymph nodes in the mediastinum. The PET-CT showed a mild focal abnormal uptake in the upper thoracic esophagus. The patient underwent an Ivor-Lewis procedure in June, 2013. Pathologic examination revealed spindle shaped malignant melanocytes with hyperchromated nucleis and black pigmentation. The lesion had invaded the submucosal layer. Thus the patient was diagnosed as esophageal malignant melanoma, stage T2N0M0. She is now under close observation at the out-patient department and has been disease free for 13 months.e