Primary malignant melanoma of the esophagus combined with squamous cell carcinoma: A case report

Figure 1  Computed tomography indicates thickening of the esophageal wall.

Figure 2 Gastroscopy suggested multiple lesions of the esophagus. A: 23–27 cm from the incisor; B: 29 cm from the incisor; C: 32 cm from the incisor; D: 39–43 cm from the incisor.

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.

Figure 4  Esophageal barium swallow (the arrow indicates the location of the lesion).

Figure 5  Programmed death ligand-1 immunohistochemistry 22C3: The tumour proportion score results were 1%-2%.

Figure 6  Gastroscopy review.