Rectosigmoid cancer

Case contributed by Dr MT Niknejad

Presentation

Abdominal pain and chronic constipation.

Patient Data

Age: 70 years
Gender: Male
CT

A few small nodules, less than 5 mm are scattered at both lungs which seems to be fibrotic nodules.  
Smudging of the fat planes is seen surrounding the superior mesenteric vessels and their branches within the root of the small bowel mesentery, accompanied by several prominent mesenteric lymph nodes, most compatible with mesenteric panniculitis.
Increased wall thickness due to tumoral infiltration is present at rectosigmoid junction, measuring about 9 cm in length; accompanied by surrounding fat stranding. Several enlarged lymph nodes with maximums SAD of 15 mm are noted in the vicinity of diseased segment. There is no sign of local invasion to adjacent structures. 
The prostate gland is enlarged.
Degenerative changes as osteophytosis are seen at the lumbar spine.

Case Discussion

Rectosigmoid mass (pathology proven adenocarcinoma) with regional lymph node enlargement.
Colorectal cancers can be found anywhere from the cecum to the rectum. The rectosigmoid is involved in approximately 55% of cases. 

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