Colorectal carcinoma - rectosigmoid

Case contributed by Varun Babu
Diagnosis almost certain

Presentation

Hematochezia with colonoscopy revealing a rectosigmoid growth.

Patient Data

Age: 70 years
Gender: Female

Approximately 15 cm proximal to the anal verge is a non-circumferential transmural thickening of rectosigmoid with transerosal spread. Two pelvic deposits, one on either side of afflicted colon is seen with loss of fat planes with both adnexa. Mild pericolonic free fluid. 

A 20 mm hypodense lesion is seen in segment V of liver. 

Case Discussion

Example of colorectal primary neoplasm that has spread across the full thickness of the wall, growing deposits in the mesentery, engulfing both adnexa. The portal spread is identified in the form of a right hepatic deposit. 

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