21 Cases of Cororectal Lateral Spreading Tumor

• Published in: Nippon Daicho Komonbyo Gakkai Zasshi Vol. 50; no. 2; pp. 80 - 86
• Main Authors: Simada, A., Asou, S., Takano, M., Hidaka, H., Toyohara, T., Nozaki, R., Kuromizu, J., Inoue, F., Tashiro, K., Nakashima, E., Kubota, I., Tokumine, F., Tuji, Y., Kamura, Y., Hirokuni, T., Kono, Y., Jounai, H., Kage, M.
• Format: Journal Article
• Language: English; Japanese
• Published: The Japan Society of Coloproctology 1997
• ISSN: 0047-1801; 1882-9619
• DOI: 10.3862/jcoloproctology.50.80

The 21 cases (22 lesions) of colorectal lateral spreading tumors (LST) were studied. These lesions were called carpet-like tumor, creeping tumor, nodule-aggregating tumor and non-nodule-aggregating flat elevation. In this paper, clinicopathlogical features of those tumors were described. The conclusions were as follows : (a) Nodule-aggregating type LST may show malignant change with increasing size and height of the nodule. (b) There was no difference in malignant potential between nodule-aggregating type LST and non-nodule-aggregating type LST. (c) End-oscopic resection may be indicated in less than 30mm nodule-aggregating type and less than 10mm non nodule-aggregating type.