Abstract
Early colorectal cancers show diversity in configuration. The Japanese Research Society for Cancer of the Colon and Rectum divides the shapes of early cancers into type I (pedunculated, semipedunculated, and sessile), type II (superficial), and special type. Superficial lesions are subdivided into superficially elevated, flat, and superficially depressed types. This classification is also applied to the description of the shape of adenomas. Of these, the superficially depressed-type lesions are very important because they are often malignant and tend to invade the submucosa despite their small size [1].
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© 2006 Springer-Verlag Tokyo
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Shimizu, S., Tada, M. (2006). Colorectal Cancer. In: Fujita, R., Jass, J.R., Kaminishi, M., Schlemper, R.J. (eds) Early Cancer of the Gastrointestinal Tract. Springer, Tokyo. https://doi.org/10.1007/4-431-30173-9_9
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DOI: https://doi.org/10.1007/4-431-30173-9_9
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-22872-1
Online ISBN: 978-4-431-30173-8
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