Left colonic perforation due to diverticulitis.
Left hemicolectomy measuring 35 cm long, with attached mesenteric fat measuring 11 x 5 cm. Macroscopic examination showed no gross masses or ulceration; however, sectioning revealed a perforated area measuring 2 cm. No lymph nodes are identified within the mesenteric fat. Additionally, there is a separate nodule measuring 2.5 x 2 cm showing dark brownish homogenous cut section.
Lt. hemicolectomy: