Publications by authors named "Claudio de Oliveira Matheus"
Context: Restorative proctocolectomy with anastomosis of an ileal pouch to the anal canal is a new and rare cause for triggering the syndrome of duodenal compression by the superior mesenteric artery. Restorative proctocolectomy requires assessment of the position of the duodenum in relation to aortomesenteric constriction to avoid the occurrence of duodenal compression by the superior mesenteric artery.
Case Report: The authors report on a case of this syndrome in a patient with familial adenomatous polyposis and review the literature on the etiopathogenesis, diagnosis, treatment and prevention of this unusual entity.
Background: The problem of the relationship between blood carcinoembryonic antigen (CEA) levels and tissue CEA content in colorectal carcinoma, and the mechanisms for CEA release from tumor cells in tissue adjacent to the neoplasm is important to understanding the biology of colorectal carcinoma. It has not been adequately explained whether CEA in the peripheral blood is drained mainly by portal system blood or by the lymphatic system, or indeed by both systems.
Aim: To study the behavior of CEA levels in peripheral blood (CEA-p) and venous effluent blood (CEA-d) among patients with colorectal tumors, who underwent curative operation.
Background: Many studies in the literature have warned of the need for investigation of colonic lesions among patients, especially elderly ones, who have bacteremia and/or endocarditis from Streptococcus bovis. Bacteremia and infectious endocarditis from Streptococcus bovis may be related to the presence of neoplastic lesions in the large intestine and hepatic disease.
Aim: This report describes a patient who presented infectious endocarditis from Streptococcus bovis associated with colonic carcinoma and tubular-villous adenomas.