Rectal abscess secondary to foreign body insertion: A case report

Table 1 Key clinical features, diagnostic aids, and diagnostic results

Key clinical features	Diagnostic aids	Diagnostic results
Post-defecatory anorectal pain	Total colonoscopy	Erythematous, exophytic lesion in the distal rectum at the distal valve of Houston, proximal to the dentate line, measuring 13 x 10 mm with an inflammatory, lobulated, villous appearance, involving less than 20% of the circumference and not causing rectal lumen stenosis
Scant post-defecatory rectorrhagia	Contrast-enhanced pelvic magnetic resonance imaging	Fistulous tract with internal opening ranging from 1 to 43 mm from the anal verge, with an intramural abscess and a collection between the left iliococcygeal muscle and left prostatic lobe, with thick walls and peripheral enhancement post-contrast, containing a 34 mm hypodense linear lesion (foreign body)
Clinical presentation lasting 1 year	Anorectal endosonography	Collection originating from the periphery of the left prostatic lobe descending to the external anal sphincter without involving the internal anal sphincter. No external opening, seemingly located above the dentate line on the left lateral wall
Non-mucosal lesion, painful on palpation, no active bleeding	Not applicable	Not applicable