| Theme | Depressed type of lesions over 10 mm in size | |
|---|---|---|
| Title | Radiological features of large depressed tumors of large intestine | |
| Publish Date | 2004/05 | |
| Author | Hiroyuki Kobayashi | Institute of Gastroenterology, Matsuyama Red Cross Hospital |
| Author | Tadahiko Fuchigami | Institute of Gastroenterology, Matsuyama Red Cross Hospital |
| Author | Yumi Ooshiro | Institute of Pathology, Matsuyama Red Cross Hospital |
| [ Summary ] | We describe the radiological features of large depressed tumors of the large intestine. The radiological findings on detectable lesions display irregularshaped barium flecks with surrounding radiolucency, irrespective of the tumor being over 10 mm or not. However, more than half of the large depressed tumors are submucosal invasive cancers, for which radiological findings were different from mucosal and sm1 cancers. These were the large depressed tumors invasing sm2, 3 having more frequently anhomogenous barium flecks in the depressed area and irregular nodular marginal elevation. In regard to the differential diagnosis of large depressed tumors and IIa (LST-NG pseudodepressed type) with barium enemas, there are some useful radiological findings that suggest the latter do not have radiolucent halos around the lesions, and the size is often larger than 20 mm, which is not so in the former type. | |