A 79-year-old white male patient reported sudden onset of pain in the left lower abdominal quadrant and fever of 38°C. There was pain on pressure in the lower left abdominal quadrant and mild guarding. Ultrasound revealed individual diverticula in the sigmoid colon and a solitary abscess 2 cm in diameter that could not be unequivocally assigned to the sigmoid. There was only mild thickening of the wall of the colon in this area.
The video recording shows drainage of the abscess into the lumen of the sigmoid colon secondary to careful contact with the biopsy forceps.
The diagnosis of diverticulitis with abscess formation was not clear prior to the colonoscopy. This was the indication for the colonoscopy. Normally, it is recommended to defer colonoscopy to at least six weeks after treatment. In this case, colonoscopy was limited to the sigmoid colon.