RESUMO
Purpose:To study the clinic characteristic, diagnosis and therapy of hereditary nonpolypoid colorectal cancer.Methods:We analysed the diagnosis, therapy and follow up of hereditary nonpolypoid colorectal cancer in 32 cases from 11 families by studying the tumour site, pathologic results. Results:There were 43 cancer patients having 61 tumours in 11 families, and 32 cases were intestinal cancer with 39 tumours. In these 32 cases, there were 12 hereditary nonpolypoid colorectal cancer (37.5), and 5 cases were intestinal cancer (15.6). We examined the patients and their direct relatives and found 28 people had various cancer, of which 20 cases without any complaint. Conclusions:Hereditary nonpolypoid colorectal cancer is a dominant hereditary disease, with the characteristic of early flare up,prone to upper colon. They are always non contemporary polygeneous cancer or contemporary polygeneous cancer, and prone to take place outside of colon. So it is important not only for patients to be treated and followed up but also for their relatives to be instructed and followed up. We must study the disease history in details. [