Rare Case of Cecal Signet Ring Cell Carcinoma with Distal Intramural Spread

In this paper, we report a rare case of cecal Signet ring cell carcinoma (SRCC) with Distal intramural spread (DIS) along with a review of the literature. A 71-year-old woman suffering from vomiting, abdominal pain, and abdominal distension was admitted to a hospital and was suspected to have ileus. She was transferred to our hospital and diagnosed with cecal cancer with intestinal obstruction. Laparotomy was performed, after which she was diagnosed with cecal SRCC by histopathological examination. A submucosal lesion was located 55 mm from the distal side of the main tumor. This lesion was also diagnosed as SRCC. It was not exposed to the epithelium or the serous membrane. The submucosal tumor was diagnosed as DIS of cecal SRCC. After the operation, she underwent chemotherapy with FOLFIRI+Cet (5-fluorouracil, leucovorin, and irinotecan plus cetuximab). At a follow-up examination nine months after surgery, she was found to be doing well.