Coexistence of esophageal blue nevus, hair follicles and basaloid squamous carcinoma: A case report

Figure 2 Focal distribution of melanocytes in keratinocytes of the basal esophageal mucosa layer, heavily pigmented, spindled or dendritic melanocytes/pigmentophages locate predominately in the superficial lamina propria, Moreover, there are several hair follicles and a horn cyst in the mucosa, with melanocytes in the hair follicle (HE, × 40) (A), and distribution of melanocytes in keratinocytes of the basal esophageal mucosa layer and hair follicles in the mucosal lamina propria with melanocytes (B,C) (B: HE, × 200; C: HE, × 40), cluster of hair follicles and horn cysts in the mucosa (D,E) (HE, × 40), and focal distribution of melanocytes in keratinocytes of the basal esophageal mucosa layer below the BSC (HE, × 40) (F).