大肠癌的诊断与治疗木俣博之等一、诊断１．临床症状早期多无症状，或常以便中带血和轻度腹泻、腹痛而被发现，故须注意勿以痔核而误诊。（１）出血以便中带血或血便而初发症状者占最多。且多见于溃疡性病变病例。早期病例则多表现为少量出血而仅出现大便潜血试验阳性。（... Diagnosis and treatment of colorectal cancer Mu Zibo et al. Diagnosis 1. Many clinical symptoms are asymptomatic early, or are often found in the blood and mild diarrhea, abdominal pain, it should be careful not to misdiagnose the nucleus. (1) Hemorrhage causes most of the initial symptoms with blood or bloody stools. And more common in ulcerative lesions. In early cases, there was only a small amount of hemorrhage and only fecal occult blood test was positive. (...