Case Report
Copyright ©The Author(s) 2023.
World J Gastrointest Surg. Feb 27, 2023; 15(2): 287-293
Published online Feb 27, 2023. doi: 10.4240/wjgs.v15.i2.287
Figure 3
Figure 3 Endoscopic biopsy. A: HE staining of malignant melanoma; B: HE-stained squamous cell carcinoma; C: Immunohistochemical HMB45 positivity; D: Immunohistochemical Melan-A positivity.