Figure 3. Immunohistochemical staining shows that the neoplastic cells are positive for S-100 immunostain (A) and HMB-45 immunostain (B) and negative for pan cytokeratin immunostain (C), consistent with the diagnosis of malignant Melanoma. (A) x200, (B) x200 (C) x200

From

Primary Malignant Melanoma of the Esophagus: Prognosis and Therapeutic Challenges

Eman EL-Sawalhy, Marwa Sokrab, Paige Spagna, Mohammad Arman, Said Hafez-Khayyata, Victoria Badia, Shahina Patel

American Journal of Medical Case Reports. 2021, 9(9), 460-463 doi:10.12691/ajmcr-9-9-6