| Theme | Reappraisal of Colorectal Protruded and Flat Lesions Which are Encountered During Endoscopy | |
|---|---|---|
| Title | Review of Diagnosis and Treatment of Colonic Submucosal Tumors, Especially GIMT | |
| Publish Date | 2011/11 | |
| Author | Ichiro Hirata | Department of Gastroenterology, Fujita Health University |
| [ Summary ] | Types of colonic SMT (submucosal tumor) include benign GIMT (gastrointestinal mesenchymal tumor), including lipoma, leiomyoma, hemangioma, lymphangioma, schwannoma, neurofibroma, and granular cell tumor. Lipomas and leiomyomas are for the most commonly observed lesions. On the other hand, leiomyosarcomas, angiosarcomas, malignant melanomas, GIST(gastrointestinal stromal tumor) and Kaposi sarcoma are associated with malignant GIMT. Leiomyosarcoma accounts for the most commonly associated condition. The macroscopic characteristic of the SMT are gentlysloping protubaerances with non-differentiated borders between the base of the lesion and the circumference of the mucosa, sometimes exhibiting bridging folds. Lipomas display yellowish colors and lymphangiomas are white and somewhat transparent. Hemangiomas commonly present with red to blueish colors. Lipomas and lymphangiomas are very soft and become dented easily when the lesion is pushed with a forceps (cushion sign). Concerning therapy for colonic SMT follow-up, endoscopic treatment or surgical treatment is chosen depending on the presence or absence of symptoms and the property of the lesion concerned. |
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