Related Experiment Video
Updated: Nov 20, 2025

A Melanoma Patient-Derived Xenograft Model
Published on: May 20, 2019
[Amelanotic Malignant Melanoma of the Esophagogastric Junction-A Case Report]
Ryota Magara1, Yosuke Kano, Hiroshi Ichikawa
1Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences.
Abstract:
A 73-year-old man presented with anemia, and gastroscopy showed a nonpigmented tumor in the esophagogastric junction. The result of the tumor biopsy initially suspected poorly differentiated adenocarcinoma. However, additional immunohistochemical examination revealed malignant melanoma. The final diagnosis was amelanotic malignant melanoma of the esophagogastric junction with adrenal and spinal metastasis. Although immunotherapy was performed, the patient died 132 days after diagnosis.
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