caa a22 4500 47580175X CHVBK 20180406123739.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/s002680010155 doi (NATIONALLICENCE)springer-10.1007/s002680010155 Radiographic Diagnosis of Early Colorectal Cancer, with SpecialReference to the Superficial Type of Invasive Carcinoma [Elektronische Daten] [Masakazu Maruyama, Koichi Koizumi, Shunkichi Kai, Akira Kazami, Takayoshi Handa] The possibility of radiographically diagnosing carcinoma with submucosal involvement (invasive carcinoma) is discussed based on 119 invasive carcinomas of the large bowel that had been treated surgically and colonoscopically over a period of 9 years (1989—1997) at the Cancer Institute Hospital in Tokyo. Of these lesions, 38 were superficial-type invasive carcinoma, accounting for 31.9% (38/119) of all invasive colorectal carcinomas, including 36 lesions (94.7%, 36/38) of types IIa and IIa+IIc and 2 lesions (5.3%, 2/38) of type IIc+IIa. No pure type IIc was seen. The radiographic images obtained were correlated with macroscopic findings and analyzed in terms of visualization of the lesion's contour, central depression, converging folds, and basal indentation. A definitive diagnosis of superficial invasive carcinoma can be made radiographically if a lesion measures 10 mm and reveals moderate to severe basal indentation in a complete or nearly complete profile radiographic image. Attention should be paid to the presence of superficial-type advanced carcinomas measuring 10 mm or less, which is not infrequently experienced in Japan. Polypoid invasive carcinoma can be definitively diagnosed in the same way with much more certainty than can the superficial type because few polypoid advanced carcinomas are less than 20 mm. The size and the radiographic sign of the basal indentation are the most important indicators for the diagnosis of invasive carcinoma. Société Internationale de Chirurgie, 2000 Maruyama Masakazu Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut Koizumi Koichi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut Kai Shunkichi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut Kazami Akira Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut Handa Takayoshi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut World Journal of Surgery Springer-Verlag 24/9(2000-09-01), 1036-1046 0364-2313 24:9<1036 2000 24 268 https://doi.org/10.1007/s002680010155 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s002680010155 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Maruyama Masakazu Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut NATIONALLICENCE 700 1- Koizumi Koichi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut NATIONALLICENCE 700 1- Kai Shunkichi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut NATIONALLICENCE 700 1- Kazami Akira Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut NATIONALLICENCE 700 1- Handa Takayoshi Division of Internal Medicine, Cancer Institute Hospital, 1-37-1 Kami-Ikebukuro Toshima-ku, Tokyo 170-0012, Japan aut NATIONALLICENCE 773 0- World Journal of Surgery Springer-Verlag 24/9(2000-09-01), 1036-1046 0364-2313 24:9<1036 2000 24 268 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer