Presentation
Chronic constipation.
Patient Data
A 4 mm subpleural nodule is noted at right lower lobe which seems to be fibrotic.
Circumferential wall thickening in favor of tumoral infiltration is noted at middle and superior portion of rectum associated with mild perirectal fat stranding. A few regional lymphadenopathies are also noted. There is no sign of local invasion to mesorectal facia and other pelvic organs.
The prostate gland is enlarged.
Grade I spondylolisthesis with bilateral spondylolysis is noted at L5/S1 level.
Case Discussion
Pathology proven rectal adenocarcinoma with small regional lymphadenopathies.
Colorectal cancers can be found anywhere from the cecum to the rectum. Rectosigmoid involvement includes about 55% of cases as the most common site of colorectal cancer. CT is the modality most used for staging colorectal carcinoma, however, MRI is the preferred modality for the staging of rectal cancer.