Squamous cell carcinoma after radiofrequency ablation for Barrett's dysplasia

Figure 2 Endoscopic, genetic and histological figures of the patient after radiofrequency ablation. A: Endoscopic view of a 4cm ulcerating mass between 35 to 39 cm; B: Example of positive p63 stain of the biopsies taken from the ulcerating mass (arrow); C: Haematoxylin and eosin stain of biopsies taken from the ulcer crater demonstrating invasive squamous cell cancer (arrow); D: Sanger sequencing of a mutation in TP53 c.817 C>T p. R273C (upper panel, starred) Wild type Sanger sequence of TP53 (lower panel).