Eight patients with proved gastric carcinoma and 3 with gastric lymphoma were studied preoperatively with computed tomography. CT accurately identified abnormal stomach wall thickening and intra-abdominal tumor extension. Mural thickening was seen on the CT scan when a moderately distended stomach had a wall more than 10 mm thick. CT was useful for assessing surgical resectability, evaluating tumor response to chemotherapy or radiotherapy, and detecting postoperative recurrence. Fourteen patients with an abnormal barium study suggesting gastric malignancy were also studied with CT, which correctly demonstrated a normal stomach or identified the reason for the abnormal barium study, such as an unusual placed spleen or a pancreatic carcinoma invading the stomach.
Involvement of the terminal ileum in cases of cecal carcinoma usually results from direct extension through the cecal wall and ileocecal valve. Extensive lymphatic metastasis from cecal carcinoma can result in deranged lymphatic flow and apparently cause metastatic involvement of the ileum and its mesentery in the absence of direct extension. Three cases with the lymphatic obstruction pattern are described. Demonstration of these changes on antegrade small bowel examination indicates that extensive lymphatic metastasis has occured and that resection will not be curative.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.