Fig. 1: Examples of esophageal squamous cell carcinoma (SCC) with basaloid features.

A, B Examples of pure basaloid SCC. SCC with both basaloid features (C) and conventional poorly differentiated areas (D). SCC with both basaloid features (E) and well-differentiated keratinizing features (F) (A, B, C and E ×200, D and F ×400).