Case report of a traumatic rectal neuroma

Abstract

Traumatic neuroma is a well-recognized complication of lower extremity amputation, yet has also been noted to occur elsewhere. We report a clinical case and English-language literature review of traumatic rectal neuroma, a well-known pathologic entity not previously reported in this anatomic location.

Keywords: Traumatic rectal neuroma; transanal endoscopic microsurgery.

Figure 1.

Colonoscopic view of incompletely excised 8mm distal rectal polyp.

Figure 2.

Endorectal ultrasound of rectal lesion showing submucosal involvement. (A) Axial view with arrows denoting mural component in muscularis propria; (B) Axial view with arrow demonstrating mucosal component; (C) 3D reconstruction showing mucosal (arrows) and muscular wall (arrowheads) components.

Figure 3.

Pathology images of traumatic rectal neuroma. (A) Low power view. Note overlying mucosa with hemorrhage and ulceration. Submucosa and muscularis propria are involved by a proliferation of nerves growing in a haphazard arrangement. (B) High power view of nerve bundles. (C) S100 and neurofilament highlight the nerve bundles. (D) Epithelial membrane antigen highlights the perineurium.