Annals of Coloproctology

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Colorectal Cancer Presenting as an Early Recurrence Within 1 Year after a Curative Resection.: Jung, Sang Hun , Kim, Hee Cheol , Kim, Ah Young , Choi, Pyong Wha , Park, In Ja , Yu, Chang Sik , Kim, Jin Cheon; J Korean Soc Coloproctol. 2008;24(4):265-272.; DOI: https://doi.org/10.3393/jksc.2008.24.4.265

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PURPOSE
An individualized surveillance protocol based on stratified prognostic factors is needed for the early detection of recurrent disease. The aim of this study was to determine both the clinicopathological characteristics for early-recurring colorectal cancer and the impact on survival.
METHODS
From January 1996 to September 2000, 1,504 patients with curatively resected colorectal cancer were recruited. The primary goal of this study was to evaluate the time interval until first loco-regional or distant recurrence, and the secondary goal was the last survival status. Early recurrence was defined as recurrence within the first 12 months postoperatively. Clinicopathologic data and preoperative CT records were reviewed. The follow-up period was over 48 months.
RESULTS
The 5-year recurrence rate was 25.4%, and 39.5% of these were detected within the first 12 months postoperatively. In the multivariate analysis, the independent prognostic factors for early recurrence were cell differentiation (PD/MUC/SRC), lymphovascular invasion, and absence of adjuvant chemotherapy in stage III and curatively resected colorectal cancer in stage IV. Inaccurate interpretation by a low-quality CT scan resulted in a stage III cancer being understaged preoperatively. The 5-year overall survival rate according to the recurrent time interval was significantly different (early recurrence: 7.4% vs. late recurrence: 23.6%, P<0.05). The resection rate was similar in both groups (early recurrence: 22.7% vs. late recurrence: 27.6%, P=0.392).
CONCLUSIONS
Colorectal cancer that recurred within 12 months showed more aggressive biologic behaviors and poor survival. Understaging caused by incomplete preoperative evaluation for disease extension may cause treatment failure.

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Predictive factors and the prognosis of recurrence of colorectal cancer within 2 years after curative resection
Jong Pil Ryuk, Gyu-Seog Choi, Jun Seok Park, Hye Jin Kim, Soo Yeun Park, Ghil Suk Yoon, Soo Han Jun, Yong Chul Kwon
Annals of Surgical Treatment and Research.2014; 86(3): 143. CrossRef
Advanced Neoplasm Detection and Its Associated Factors in Colonoscopic Surveillance of Endoscopically Resected Early Colorectal Cancer
Soon Ha Kwon, Jin Woo Choo, Hyun Gun Kim, Seong Ran Jeon, Byung Hoo Lee, Tae Hee Lee, Wan Jung Kim, Bong Min Ko, Jin-Oh Kim, Joo Young Cho, Joon Seong Lee, Moon Sung Lee
The Korean Journal of Gastroenterology.2013; 62(4): 219. CrossRef

Significance of Subclassification of Depressed-Type Early Colorectal Cancer Based on Growth and Development.: Kim, Hyun Shig , Park, Won Kap , Park, Jong Beom , Kang, Yong Won , Lee, Jung Dal , Kim, Kwang Yun; J Korean Soc Coloproctol. 2001;17(4):203-208.

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Abstract PDF: PURPOSE
Recently it became obvious that some early cancers which appeared to be polyp lesions had actually originated from depressed-type lesions. The aim of this study was to clarify both the characteristics of depressed- type early colorectal cancers compared with protruded- or flat-type ones and the significance of a subclassification of depressed-type early cancers.
METHODS
The authors experienced 248 early colorectal cancers from 1996 to 2000. We classified those cancers into protruded, flat, and depressed types based on growth and development. Further, we used Kudo's classification to subclassify the depressed-type cancers into three sub-types, IIc, IIa+IIc, and Is+IIc. We analyzed the 248 cases with emphasis on size, type, sub-type, and submucosal cancer (sm) rate.
RESULTS
The sm rate of the depressed cancers was 81.8% (18/22) and was significantly higher than those of the protruded (30.5%) or the flat (38.5%) types (P<0.05). The sm rate of the depressed lesions not larger than 10 mm was 70% (7/10) and that of the lesions from 11 mm to 20 mm was 91.7% (11/12); there were no depressed cancers larger than 20 mm in diameter. The sm rate of the type IIa+IIc plus type Is+IIc lesions was higher than that of type IIc lesions (93.3%, 14/15 vs. 57.1%, 4/7). Endoscopic resection was done in 74.2% of all early colorectal cancers.
CONCLUSIONS
The sm rate of depressed-type early colorectal cancers was 82%, and no depressed cancers were larger than 20 mm in diameter, suggesting that by the time a depressed-type cancers had become larger than 20 mm in size, it had already progressed into an advanced cancer. Thus, it is very important to detect depressed-type cancers in an early stage. Moreover, it is imperative to differentiate type IIa+IIc and type Is+IIc from polyp lesions and to manage them cautiously because their sm rate is higher than that for type IIc lesions.

The Significance of Serum Carcinoembryonic Antigen in Curative Surgery of Colorectal Cancer.: Lee, Mun Sub , Chung, Byung Ook , Jung, Ki Hoon , Seo, Jung Wook , An, Woo Sub , Bae, Sung Han , Oh, Min Gu , Lee, Jun Hee , Yang, Chang Hun; J Korean Soc Coloproctol. 2000;16(4):260-266.

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Abstract PDF: Carcinoembryonic antigen (CEA) in now the most widely used and the most useful marker for many cancers, including those of the colon, lung, pancreas, and breast. Also CEA is widely used for detection, staging, recurrence, and assessing the response to therapy in colorectal cancer.
METHODS
From 1992 to 1998 the clinical value of the pre- and postoperative serum levels of CEA who underwent curative surgery at Department of General Surgery, College of Medicine, Dongguk University KyungJu Hospital, in 140 s patient with colorectal cancer with abnormal levels of CEA (>or=5 ng/ml) was investigated.
RESULTS
The results are as follows: 1) The positive rate of preoperative CEA level was 47%, so preoperative CEA level measurement was not useful as screening test for colorectal cancer. 2) There was no significant association between abnormal CEA level and the location of tumor. 3) There was significant association between increased levels of preoperative serum CEA and lymph node metastases. 4) The incidence of preoperatively elevated CEA levels in Dukes stages A, B, C, and D was 0%, 27%, 63%, 71%, respectively. There was significant association between increased levels of the preoperative serum CEA and the progressive stages of colorectal cancers. 5) There was no significant association between abnormal CEA level and histologic differentiation of tumor. In addition, there was no significant association between abnormal CEA level and ploidy status of tumor. 6) The recurrence rate was 20% and 77% in patients with preoperative levels of CEA<5 ng/ml and >5 ng/ml, respectively. 7) The recurrence rate was 11% and 64% in patients with postoperative levels of CEA <5 ng/ml and >5 ng/ml, respectively. 8) Considering as normal CEA levels up to 5.0 ng/ml, sensitivity was found to be 77%, specificity, 80%, and predictive value of an elevated CEA concentration, 77%.
CONCLUSIONS
In conclusion, it is suggested that measurement of preoperative and serial postoperative CEA is very useful in assessing the prognosis and in detecting recurrences in colorectal cancer.

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