Annals of Coloproctology

Volume 14(4); December 1998

Original Articles

The Study on Comparing the Expression of the Collagen IV with different Histopathologic Features of the Colorectal Carcinomas.: Jung, Woo Yeong , Kim, Jong Ik , Lee, Seung Jae , Lee, Jong Kyi , Jeon, Byeong Min , Oh, Sang Hoon , Hong, Kwan Hee , Kim, Sang Hyo; J Korean Soc Coloproctol. 1998;14(4):681-690.

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Abstract PDF: The malignant potential of a tumor is related to its ability to dissociate invasion and seed other sites-metastasis. In either instance, the tumor cells are confronted with a barrier signif icantly composed of type IV collagen. This type IV collagen is a major structural protein of basement membranes. Using immunohistochemical method to detect type IV collagen, intensity of stain and continuity of basement membrane at the tumor-stromal border was studied in surgical specimens from 47 colorectal carcinomas at the Pusan Paik-Hospital. Immunoreactivity was evaluated semi-quantitatively as three categories; Type-1, thick or normal basement membrane with or without minimal discontinuity; Type-2, thin basement membrane with or without moderate discontinuity; Type-3, fragmented or absent basement membrane. Also, in each case the tumor morphologic features were identified. The histologic type, differentiated grade, desmoplastic response, lymphatic and vascular invasion, lymph node involvement, tumor size and modified Dukes' stage were estabilished. Type-1 immunoreactivity was significantly observed in well-differentiated, negative lymph node, Dukes' stage B1/B2 tumors, and Type-3 was in poorly differentiated, positive lymph node, Dukes' stage C2/D. The expres sion of collagen IV in basement membrane was statistically significant correlated with differentiated grade, lymph node metastasis and modified Dukes' stage. By contrast, no statistically significant correlation was found between paucity of type IV collagen and the other parameters. The result suggest that expression of type IV collagen in basement membrane may be a useful prognostic marker, and may play a part in the invasive and metastatic process of colorectal carcinomas.

The Prognostic Value and Reciprocity of p53 and bcl-2 Expression in Colorectal Carcinoma.: Park, Sang Heon , Min, Young Don , Kim, Jeong Yong , Kim, Kweon Cheon , Kim, Seong Hwan , Lim, Seong Cheol; J Korean Soc Coloproctol. 1998;14(4):691-700.

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Abstract PDF: p53 is a tumor suppressor gene product identified in a wide range of tumor including colorectal carcinoma. Genetic alterations in the p53 tumor suppressor gene are common in human colorectal carcinoma. bcl-2 is a protooncogene that inhibits apoptosis. The products of mutant p53 gene and bcl-2 have been associated with prognosis in several malignancies including colorectal carcinomas. This study was undertaken to evaluate values of p53 and bcl-2 oncoproteins as prognostic factors relative to clinicopathological factors and correlation of their expression. Analyses were made on achieval pathologic tissues of 80 patients with colorectal carcinomas including 34 patients able to follow-up over 5 years. The oncoproteins were localized using commercially available monoclonal antibodies:DO-7 for p53, clone124 for bcl-2. Expression of bcl-2 was cytoplasmic, whereas nuclear p53 expression was localized in carcinoma cells. The patients were 17 to 83 years of age. The expression of p53 and bcl-2 was determined respectively in 30 (37.5%) and 21 (26.3%)cases. The expression of p53 nuclear expression was not correlated with tumor location, size, histologic grade, Duke's classification, regional lymph node metastasis and tumor recurrence. The cytoplasmic expression of bcl-2 was not correlated with tumor location, size, histologic grade, Duke's classification, regional lymph node metastasis and recurrence. Univariate analysis showed that patients with p53 nuclear expression were not associated with poorer overall survival than patients with p53 negative, and also showed in patients with bcl-2 expression. The expression of p53 did not affect to that of bcl-2. We concluded that the p53 nuclear and bcl-2 cytoplasmic expression were not independent prognostic factors in colorectal carcinomas. Evidence of reciprocity of bcl-2 and p53 expression was not found.

Cytosolic Glutathione S-Transferase Change after Deoxycholate Exposure in Colon Cancer Cell Lines.: Park, Dong Kook , Shin, Ji Hyun , Park, Seok Gun , Cheung, Sun Young; J Korean Soc Coloproctol. 1998;14(4):701-708.

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Abstract PDF: PURPOSE
Bile acids (especially deoxycholate) was known to be toxic and mutagenic on colon epithelium. They proposed at least four mechanisms for the bile acid toxicity. It is the one of these mechanisms that bile acid inhibits the xenobiotic metabolizing enzyme activity (esp glutathione S-transferase, GST). So we measured the cytosolic GST level of colon carcinoma cell lines after deoxycholate exposure whether or not the deoxycholate lowered the cytosolic GST activity.
METHODS
Three colon cancer cell lines (LoVo, SW480, HT29) were used for this study. We calculated the cellular toxicity by MTS method. And cytosolic GST activity was measured according to the method as Habig described. For total GST activity, 2.5 mM 1-chloro-2,4-dinitrobenzene was used for substrate, and measured as absorbance in 340 nm.
RESULTS
Basal cytosolic GST level for LoVo, SW480, HT29 cell line was 514.59+/-27.01, 291.63+/-38.44 and 344.58+/-47.92 nmol/min/mg cytosol protein. GST level did not changed significantly after 5 days culture without DCA. But GST level was decreased significantly to 128.63+/-21.35, 134.33+/-41.76 and 163.10+/-22.73 nmol/min/mg cytosol protein each cell line after 5 days deoxycholate exposure (p<0.005).
CONCLUSION
Cytosolic GST level was lowered significantly after deoxycholate exposure for 5 days. One of the mechanisms of bile acid toxicity for colon cancer cell is proposed to inhibit cytosolic GST activity.

Expression of hMSH2, hMLH1 Protein in Sporadic Colorectal Cancer and Corresponding Normal Tissue.: Jung, Jae Young , Park, Dong Kook , Shin, Ji Hyun; J Korean Soc Coloproctol. 1998;14(4):709-718.

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Abstract PDF: PURPOSE
DNA mismatch repair gene is responsible for hereditary nonpolyposis colorectal cancer. But it is not well known its role in sporadic colorectal cancer patients. We analysed normal hMSH2, hMLH1 protein expression in colorectal adenocarcinoma tissues and corresponding normal tissues to find out the role of mismatch repair gene in sporadic colorectal cancer by Western blotting.
METHODS
Normal hMSH2 and hMLH1 protein expression was studied on 25 colorectal cancer and corresponding normal tissue by Western blot with hMSH2 and hMLH1 monoclonal antibody. Normal protein band was expressed on 100 kD in hMSH2 and 87 kD in hMLH1. SW480 and LoVo cell line was used as positive and negative control for hMSH2 and LoVo and SW480 as positive and negative for hMLH1. And we analysed the relation between the hMSH2, hMLH1 protein expression and clinicopathological parameters.
RESULTS
It was 2 cases (8%) that both hMSH2 and hMLH1 protein expression was not observed. Three cases (12%) were negative for hMSH2 and 2 cases (8%) for hMLH1. One or both hMSH2, hMLH1 protein expression was not observed in 7 cases (28%) in total. There was no correlation for proximal occurrence (25% vs 35%), young age (37.5% vs 23.5%) and lymph node metastasis (50% vs 47%). But poorly and mucinous differentiation was regarded as having relation with negative expression of hMSH2 and hMLH1 (50% vs 17.6%) but not significant statistically.
CONCLUSION
Sporadic colorectal cancer with negative expression of normal hMSH2 and hMLH1 protein showed no relation to younger age, proximal site preference and lymph node metastasis. But it was suggested that mismatch repair gene protein was involved in cancer cell differentiation in sporadic colorectal cancer.

The Prognostic Significance of Tumor Microvessel Density in Colorectal Carcinoma.: Lee, Jeong Kyun , Han, Weon Cheol; J Korean Soc Coloproctol. 1998;14(4):719-724.

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Abstract PDF: PURPOSE
This study was carried out to evaluate the relationship with other clinicopath ologic factors and prognostic significance of tumor microvessel density in colorectal car cinoma. MATERIAL AND METHODS: 71cases of primary colorectal carcinoma (Modified Astler-Coller stage B and C) were analysed retrospectively who underwent curative resection at Wonkwang university hospital from September, 1991 to September, 1993. Male was 39cases. Age under 60 years was 31cases. 5 year survival rates were 80% (50 cases) in stage B and 52.4% (21 cases) in stage C. Tumor microvessels were stained by immuno histochemical method using anti-CD31 on paraffine embedded tissues, and were counted within 10x objective field (about 0.74 mm2) in the area of the most intense neovascu larization.
RESULTS
Mean microvessel Density (MVD) was 56.3+/-18.0 (range 19~128). MVD was 55.2 in 11 cases of nonrecurrent group and 73.5 in 10 cases of recurrent group in stage C (p=0.012). There was no significant association between MVD and other parameters such as age, sex, tumor location and size, CEA, lymph node metastasis, and survival. The 5 year survival rates of 33 cases of MVD< or =56 and 38 cases of MVD>56 were 84.9 and 60.5% respectively(p<0.05). 5 year survival rates of MVD< or =56 groups adjusted for age, sex, tumor location, differentiation, and recurrence were higher than those of >56 groups. 5 year survival rates of MVD < or =56 and >56 groups in stage C were 100% (5 cases) and 37.5% (16 cases) (p<0.05).
CONCLUSION
Tumor microvessl density may have somewhat prognostic significance in colorectal carcinoma.

A Study on the Relationship between CEA Immunohistochemical Findings and Expression Rate of PCNA and Clinicopathologic Factors of Colorectal Cancers.: Hong, Kwan Hee , Jeon, Byeong Min , Kim, Jong Ik; J Korean Soc Coloproctol. 1998;14(4):725-734.

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Abstract PDF: Immunohistochemical study was performed for CEA staining patterns and PCNA indices. And the relationship between immunohistochemical findings and well-known clinical prognostic factors on the purpose of the clinical usefulness was evaluated. In forty seven cases of surgically removed colorectal carcinomas, the results were as follows; CEA staining patterns were apical (17 cases) and cytoplasmic (30 cases) type. Carcinomas with cyto plasmic pattern for CEA revealed more advanced Dukes' stage and more undifferentiated type and higher incidence of lymph node metastasis and were correlated with increased serum CEA levels. But PCNA indices showed no correlation with the Dukes' stage, histologic grade and CEA staining patterns. The cytoplasmic pattern of CEA immunohistochemistry may be a useful marker suggesting more aggressive biologic behavior of the colorectal carcinomas.

A Preliminary Study on the Expression of C-X-C Chemokine Genes in Colonic Mucosa of Patients with Ulcerative Colitis.: Tang, Suk Kyun , Kim, Ok Hee , Lee, Me Hwa , Shim, Ki Nam , Park, Eui Ryun , Jung, Hwoon Yong , Hong, Weon Seon , Min, Young Il; J Korean Soc Coloproctol. 1998;14(4):735-742.

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Abstract PDF: PURPOSE
Chemokines are potent regulators of the host inflammatory or immune responses. Mucosal synthesis of chemokines may be important in the pathogenesis of mucosal inflammation in ulcerative colitis (UC). We performed this study to investigate the expression of C-X-C chemokine genes in UC.
METHODS
Mucosal tissues were obtained from six normal controls and six UC patients by endoscopic biopsies. In patients with UC, mucosal tissues were separately obtained from both involved and uninvolved regions. RNA was extracted and mRNA levels of five C-X-C chemokines were determined by quantitative reverse transcription-PCR using internal RNA standards.
RESULTS
Mucosal mRNA levels of all chemokines tested increased in the involved region of UC compared with the uninvolved region of UC or normal controls.
CONCLUSION
Our data suggest that mucosal expression of C-X-C chemokines contributes to the pathogenesis of UC

33 Cases of Anal Cancer.: Ahn, Byung Kwon , Park, Yong Rae , Baek, Sung Uhn; J Korean Soc Coloproctol. 1998;14(4):743-750.

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Abstract PDF: PURPOSE
Malignant disease of the anus is rare. Abdominoperineal resection was formerly considered to be the treatment of choice. But, in recent, less ablative and more effective combined therapeutic modalities have been developed.
METHODS
we analyzed 33 patients who were diagnosed and treated as anal cancers at the Department of Surgery, Gospel Hospital, Kosin Medical Collage, from July 1, 1988 to Nov. 30, 1997.
RESULTS
The ratio of male to female was 1.4:1 and mean age was 56.7 years old. Twenty-two (84.8%) of these cancers were located in the anal canal and 5 (15.2%) in the anal margin. Three main histologic types of the anal cancers were identified: squamous cell carcinoma was the most common lesion, accounted for 17 cases (51.1%), adenocarcinoma accounted for 8 cases (24.2%), malignant melanoma accounted for 8 cases (24.2%). The overall 3-year survival rate and 5-year survival rate of anal cancer were 54.1%, 41.7%. Eleven patients with squamous cell carcinoma were treated curatively: 6 patients were treated with chemoradiotherapy, 3 patients with abdominoperineal resection, one patient with chemoradiotherapy and abdominoperineal resection, one patient with local excision.
CONCLUSION
In survival rate, there were no significant differences between chemoradiotherapy group and surgical treatment group. In squamous cell carcinomas, chemoradiotherapy had anal sparing benefit without loss of survival. On univariate analysis, T, N, type of treatment, histologic type had no statistical significances on survival. On multivariate analysis, location of lesion and distant metastasis had statistical significances.

Treatment of Obstructive Colorectal Cancer.: Lee, Dong Hee , Lee, In Taek , Chung, Bong Soo , Jeong, Choon Sik , Kim, Chang Nam , Yu, Chang Sik , Kim, Jin Cheon; J Korean Soc Coloproctol. 1998;14(4):751-760.

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Abstract PDF: The occurrence of the colonic obstruction secondary to colorectal carcinoma (CRC) has been reported in 7~30% of the CRC patients. It is generally believed that obstructive CRC is associated with a poor prognosis with respect to operative mortality and five-year survival. A series of 1064 cases of the CRC treated surgically at Asan Medical Center from June 1989 to December 1996 has been analyzed to compare clinicopathological findings between obstructive and non-obstructive CRC and to evaluate surgical treatment options in obstructive CRC. Complete obstruction was present in 49 cases (4.6%). There were no differences between obstructive and non-obstructive CRC in tumor location, size, Dukes' stage, and differentiation. In forty-nine obstructive CRC cases, primary resections were performed in 29 cases after peri-operative bowel decompression. In this group, right colon cancer was more prevalent than staged operation group (45% vs. 5%, P<0.05) and hospital stay was significantly short (16 days vs. 38 days, P<0.05). Postoperative complication rate was higher in staged operation group (65% vs. 28%, P=0.01). It may be due to stoma related wound complication. In obstructive left colon cancer, there was a significant difference in complication rate between primary resection and staged operation (P<0.05). Overall 5-year survival rate were 66% and 53% in non-obstructive and obstructive group, respectively. Survival rate according to the Dukes' B and C stages did not show statistical differences, either. Conclusively, primary resection is preferred to the obstructive CRC when supportive care, preoperative bowel decompression, and intraoperative colonic irrigation were performed adequately.

Randomized Controlled Trial

Clinical Effects of Venitol(R) on Complications after Hemorrhoidectomy Prospective Randomized and Placebo-controlled Trial.: Lee, Heung Woo , Lee, Woo Yong , Chun, Ho Kyung; J Korean Soc Coloproctol. 1998;14(4):761-766.

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Abstract PDF: Fifty four patients who received closed hemorrhoidectomy were randomized into two parallel groups and treated with Venitol(R)(a micronized flavonoidic fraction containing diosmin 450 mg and hesperidin 50 mg) (group 1) or placebo (group 2). Venitol(R) was administered at the dosage of three toblets b.i.d. the first four days and two tablets b.i.d following three days. Postoperative analgesia and laxative prescription as well as hospital stay were same in two groups. Though there is no difference of symptoms at D1, improvement of symptoms of complications was greater in group 1 than in group 2 at D18. The clinical severity of postoperative spot-bleeding, pain and anal discharge diminished in both groups but to a greater extent in group 1 (P<0.005). There was no side-effects in using Venitol(R). In summary, Venitol(R) is effective in reducing complications after hemorrhoidectomy.

Original Articles

A Clinical Study of Acute Appendicitis in Pregnancy.: Jang, Yong Seog; J Korean Soc Coloproctol. 1998;14(4):767-774.

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Abstract PDF: PURPOSE
Acute appendicitis is the most frequently encountering extrauterine surgical condition in pregnancy. Prompt diagnosis of acute appendicitis in pregnancy is not easy on the basis of clinlical findings, which may be obscured or altered by the presence of a gravid uterus. In most of cases, prompt diagnosis and early surgical intervention could result in optimal maternal and fetal outcomes. MATERIAL AND METHODS: We performed retrospective analysis of 20 cases, which were operated under the diagnosis of acute appendicitis in pregnancy from 1990 to 1995 at the department of surgery, Soonchunhyang University Hospital.
RESULTS
1) The incidence of the acute appendicitis in pregnancy was one per 742 deliveries and the diagnostic accuracy was 85%. 2) The majority of patiens was in the 3rd decade of age (76.5%). 3) Gestational stages at onset of symptom were first trimester in 6 patients (35.3%) and second trimester (52.9%) in most patients. 4) The majority of patients(82.4%) spent less than 24 hours preoperatively. 5) The symptoms in order of frequency were; abdominal pain (100%), nausea (70.5%), vomiting (41.1%), fever (23.5%), chill (11.8%), constipation (11.8%), diarrhea (5.9%). The maximal tenderness was noted on McBurney's point (29.4%) and above McBurney's point (58.8%) in most of patient. 6) The leukocyte counts were mostly in the range of 10,000 to 15,000 mm3 (47.1%) and 15,000 to 20,000 mm3 (35.3%). 7) Several types of incisions were employed: a McBurney incision was used in 8 cases (47.1%), a transverse incision in 8 cases (47.1%), and a low midline incision in 1 case (5.8%). A general anesthesia was done in 6 patients (35.3%), a spinal anesthesia done in 8 patients (47.1%), and an epidural anesthesia done in 3 patients (17.6%). A drain was placed intraabdominally in 2 cases. 8) Among 17 cases, three were reported as focal appendicitis (17.6%), ten as suppurative one (58.8%), one as ganagrenous one (5.9%) and three as perforated one (17.6%). 9) The postoperative complications included 1 wound infection and 4 artificial abortions. There was no maternal death, preterm labor, or spontaneous abortion.
CONCLUSION
Despite of diagnostic obstacles due to pregnancy, acute appendicitis can be diagnosed without major difficulty. High index of suspicion is required during diagnostic procedures and prompt surgical intervention improves maternal and fetal outcomes...EABS:

Papillary Carcinoma of Thyroid in Association with Familial Adenomatous Polyposis.: Kim, Hyung Joo , song, Chang Suk , Park, Sung Woo , Koo, Bon Sam , Kim, Sung Hu , Park, Seon Ja , Choi, Young Sik , Ahn, Byung Kwon , Baek, Sung Uhn , Koo, Ja Young; J Korean Soc Coloproctol. 1998;14(4):775-779.

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Abstract PDF: Familial adenomatous polyposis (FAP) includes early development of up to thousands of colorectal adenoma and of colonic adenocarcinoma in all untreated cases. Moreover, a variety of extracolonic manifestation are seen. Several reports have demontrated a high incidence of papillry carcinoma of thyroid. We experienced a case of familial adenomatous polyposis, presenting with thyoid papillry carcinoma, and reported with a brief review of literatures.

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