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Comparison of recurrence patterns between ≤5 years and >5 years after curative operations in colorectal cancer patients
Author(s) -
Seo Seok In,
Lim SeokByung,
Yoon Yong Sik,
Kim Chan Wook,
Yu Chang Sik,
Kim Tae Won,
Kim Jong Hoon,
Kim Jin Cheon
Publication year - 2013
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/jso.23349
Subject(s) - medicine , colorectal cancer , cancer recurrence , general surgery , oncology , cancer
Background and Objectives To identify characteristics of recurrent colorectal cancer in terms of follow‐up periods, that is, ≤5 years and >5 years after curative operations Methods This study enrolled 4,023 patients. Of them, 835 patients showed recurrence after primary curative resection for colorectal cancer. Recurrence occurred ≤5 years (n = 799) or >5 years (n = 36) after curative surgery. Variables and recurrence patterns were compared between the groups. Results Among the 835 patients who experienced recurrence, only 4.3% recurred >5 years after surgery. This group showed lower preoperative serum carcinoembryonic antigen levels, more tumors with expanding growth, well‐differentiated histology, and no lymph node metastasis (all P < 0.05). In terms of haematogenous metastasis, lung or liver was the most prevalent site in patients who recurred after >5 years or ≤5 years, respectively ( P = 0.005). In rectal cancer patients, recurrence patterns revealed the same results. In colon cancer patients, the liver was the most prevalent site in both groups. Conclusions After 5 years of follow‐up, routine surveillance for detecting other malignancies seems to be sufficient. However, the possibility of late (particularly late pulmonary) recurrence should be considered. Radiologic examination to detect pulmonary metastasis should be considered in the follow‐up program. J. Surg. Oncol. 2013;108:9–13 . © 2013 Wiley Periodicals, Inc.