RADIOLOGY: GASTROINTESTINAL: GI: Case# 32832: CARCINOID METS, CECAL & ILEAL CA. W/NE FEATURES. This is a 67 year old white female with a follow-up case of malignant metastatic carcinoid tumor, status post colonic surgery fourteen months ago chemotherapy which was started two months ago. The primary site of the carcinoid is unknown. There are multiple large low attenuation masses located diffusely throughout the liver which demonstrate peripheral rim enhancement. With carcinoid, remember the rule of 1/3: 1/3 occur in the small bowel, 1/3 have metastases, 1/3 are multiple, 1/3 have a second malignancy.