Figure 1: Two sections of the colonoscopic findings of the patient
The rectal mucosal biopsy revealed features of solitary rectal ulcer with surface erosion, crypt hyperplasia, ecstatic capillaries, fibrosis, and extension of smooth muscle fibers in lamina propria with diamond shape crypts. Although there is ulcer slough and features of ulceration, there is minimal inflammation in lamina propria. Crypt cells show regenerative hyperplasia. (Figure 2) These features of histology and colonoscopy findings were suggestive of polypoid solitary rectal ulcer.