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Follow‐up Study of Early Colorectal Cancer After Endoscopic Resection
Author(s) -
IGARASHI Masahiro,
KATSUMATA Tomoe,
NAITHO Yoshitaka,
KOBAYASHI Kiyonori,
OHHARA Akihiko,
SAIGENJI Katsunori,
MITOMI Hiroyuki,
ATARI Eio
Publication year - 1993
Publication title -
digestive endoscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.5
H-Index - 56
eISSN - 1443-1661
pISSN - 0915-5635
DOI - 10.1111/j.1443-1661.1993.tb00640.x
Subject(s) - medicine , colorectal cancer , adenoma , polypectomy , incidence (geometry) , carcinoma , cancer , endoscopy , colonoscopy , endoscopic mucosal resection , gastroenterology , surgery , physics , optics
This study was conducted to determine the significance of long‐term follow‐up observation of early colorectal cancer following endoscopic resection. The subjects included 100 patients who had undergone early colorectal cancer resection by endoscopic polypectomy with prior injection of the base (73 patients with mucosal carcinoma (m cancer), 24 Patients with submucosal carcinoma (sm cancer), and 3 patients with multiple early colorectal cancers. Posttherapeutic observation was carried out by endoscopy. The results were, briefly, as follows: 1) No cases of local recurrence or metastasis were observed during the follow‐up observation period for up to a period of 14 years. 2) 3 cases (3%) of metachronous carcinoma were detected, 2 of these patients had early carcinoma and 1 had advanced carcinoma. The mean period which elapsed before the detection of metachronous cancers was 35.0 ± 15.3 months. 3) The incidence of adenoma during the follow‐up period was 40%, the frequency of newly detected adenoma was relatively high among the patients with coexisting adenoma at the time of treatment for early carcinoma and among the elderly patients aged 60 years or over, 4) No cancer was detected after establishing a clean colon, and the incidence of adenoma in such cases was relatively low, i. e., 14.5%. The mean period of time which elapsed until the detection of the adenoma was 24.4 ± 18.0 months. The results of this study indicated that endoscopic examination is necessary and useful for surveillance of local recurrence or metachronous carcinoma as well as the detection of adenoma.