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Purpose To assess preoperative serum alkaline phosphatase (ALP) levels in colon adenocarcinomapatients with various clinical features and determine its prognostic value. Between 2000 and 2013, 10,800 stage I-IV colon cancer patients who underwent surgery wereretrospectively enrolled. The relationship between ALP level and variables, including age, gender,carcinoembryonic Antigen (CEA) levels, aspartate aminotransferase (AST) level, bilirubin level, tumor size,liver cirrhosis, hepatitis, albumin level, histological type, and TNM-stage, were evaluated. The impact of ALP level elevation on survival was evaluated. Significant elevations in ALP level were found in patients with CEA ≥5 ng/ml (p

The rate of postoperative morbidity and mortality is reportedly high in patients aged ≥ 75 years with colorectal cancer (CRC). In such patients, a comparison of the short-term outcome between open method and laparoscopy has not been clearly defined in Taiwan. We aimed to compare postoperative morbidity and mortality parameters after open method and laparoscopy in CRC patients aged ≥ 75 years. We retrospectively analyzed patients who underwent surgery for CRC from February 2009 to September 2015 at the Linkou Chang Gung Memorial Hospital in Taiwan and analyzed their clinicopathological factors. Postoperative morbidity and mortality were analyzed for evaluating if laparoscopic surgery offers more favorable outcomes than open surgery in the elderly. A total of 1133 patients were enrolled and analyzed in this study; they were divided into two groups (open method vs. laparoscopy = 797 vs. 336). The anastomotic leakage rate was significantly higher in the laparoscopy group than in the open method group (3.3 vs. 0.9%, p = 0.003). Overall postoperative morbidity and mortality rates showed no significant difference between these two groups. Postoperative hospital stay was significantly shorter in the laparoscopy group than in the open method group (10.4 ± 8.7 vs. 13.8 ± 13.5 days, p

We evaluated the effect of neutrophil-to-lymphocyte ratio (NLR) on disease-free survival in patients with stages I to III colorectal cancer (CRC).There were 3857 patients identified from our database. We used receiver operating characteristic (ROC) analysis to identify the best cutoff value of NLR. A 5-year disease-free survival was used as end point. Survival analysis was used to assess the NLR effect, after stratification by several clinopathologic factors.In the ROC analysis, NLR = 3 had the highest sensitivity and specificity. Elevated NLR (3) in colon cancer seemed to accompany larger tumor size (~5 cm) and more advanced T stage. By multivariate analysis, elevated NLR in colon cancer was associated with an increased risk of disease progression or cancer death [hazard ratio (HR) 1.377, 95 % confidence interval 1.104-1.717, P = 0.014]. However, elevated NLR in rectal cancer lost its significance in multivariate analysis (HR 1.121, 95 % confidence interval 0.941-1.336, P = 0.200). Patients with elevated NLR had worse outcome, especially for colon cancer.Preoperative NLR influenced the disease-free survival in patients with stages I to III CRC. Elevated NLR (3) was associated with worse outcome (5-year disease-free survival 66.3 % vs. 78.9 % in colon cancer, P 0.001; 60. 5 % vs. 66.2 % in rectal cancer, P = 0.008). The difference was larger in colon cancer than in rectal cancer. NLR should be considered as a prognostic factor for stages I to III CRC patients after curative surgery.

In locally advanced primary transverse colon cancer, a tumor may cause perforation or invade adjacent organs. Extensive resection is the best choice of treatment, but such procedures must be weighed against the potential survival benefits. This study was performed to identify the clinicopathological features and treatment outcomes of such tumors. We retrospectively reviewed the database of the Colorectal Cancer Registry of Chang Gung Memorial Hospital between February 1995 and December 2005. Patients with colon cancer sited between the hepatic and splenic flexure that involved an adjacent organ without distant metastasis were defined as having locally advanced transverse colon cancer. A total of 827 patients who underwent surgery for transverse primary colon cancer were enrolled in the study. Stage II and stage III colon cancer were diagnosed in 548 patients. Thirty-two (5.8%) patients were diagnosed with locally advanced tumors. Multivariate analysis revealed that stage III, preoperative carcinoembryonic antigen ≥5 ng/mL, a tumor with perforation or obstruction, and the presence of a locally advanced tumor were significant prognostic factors for both overall and cancer-specific survival. Postoperative morbidity rates differed significantly between the locally advanced and non-locally advanced tumor groups (22.7% vs. 12.3%, P

Treatment of liver metastases from colorectal cancer include surgical resection, radiation, hepatic chemoembolization, immunotherapy and intravenous chemotherapy. Complete surgical resection of liver metastases is feasible only for solitary or unilobar metastasis. Unresectable hepatic metastases of colorectal origin are resistant to radiation and immunotherapy, and the unsatisfactory results of systemic chemotherapy and chemoembolization have led to more aggressive treatment. A new method that combines systemic chemotherapy and chemoembolization is proposed. In this study, data from a total of 40 patients with unresectable hepatic metastasis from colorectal cancer were collected. All of these patients received combined chemoembolization and systemic chemotherapy. Embolization was performed by the selective cannulation of right and left hepatic artery. Equal amounts of a mixture of 10 ml lipiodol, 1,500 mg 5-fluorouracil (5-FU) and 15 mg leucovorin was deployed selectively in equal parts into the main right and left hepatic artery. Two weeks following chemoembolization, patients underwent systemic chemotherapy with 2,600 mg/m2 5-FU continuous infusion for 24 h and received 150 mg leucovorin intravenous bolus. The course of chemotherapy was repeated weekly for 24 weeks. The median follow-up period was 27 months (range 10-36 months). Following the intention-to-treat principle, the objective tumor response rate was 47.5%. The median disease-free interval was 12 months and the median survival time was 16 months. Most of the patients (73%) died of hepatic failure, while the second largest group died of abdominal carcinomatosis. In conclusion, the results of this study are of sufficient interest to justify future randomized trials.

Background. The clinical value of DNA flow cytometry of colorectal cancer is unclear. The purpose of this retrospective study was to evaluate the relationship between tumor flow cytometry, histopathologic parameters, and survival. Methods. Flow cytometry was performed on paraffin embedded specimens from 653 patients who had surgery from 1980 to 1983. Results. Aneuploidy was associated with distal tumor, perineural invasion, desmoplastic reaction, and failure to secrete mucin. TNM Stage I tumors were more frequently diploid than were more advanced tumors {71% vs. 41%). An abnormal DNA content had a marginal impact on survival as evaluated by univariate analysis (69% vs. 61% 10-year survival rate, P = 0.06). Multivariate analysis revealed that significant predictors of outcome were lymph node metastasis (95% confidence interval of relative risks of death from recurrent disease, 1.50–2.92), rectal cancer (1.22–2.19), absence of lymphocytic infiltration (1.20–2.17), invasion through bowel wall (1.17–3.13), lymphatic vessel invasion outside bowel wall (1.05–2.69), perineural invasion (1.15-3.19), and male gender (1.00–1.79). Conclusions. These findings suggest that ploidy is associated with some histopathologic parameters, but flow cytometry does not correlate with long term survival of patients with colorectal carcinoma. Cancer 1995; 76:1724–30.

Background/aims Long course concurrent chemoradiotherapy provides potential tumor downstaging. When local recurrent rectal cancer without distant metastases is diagnosed, a potentially curative resection can be performed. The aim of this study was to assess the outcome of concurrent chemoradiotherapy in treating isolated local recurrent rectal cancer. Methodology Patients (n=102) with isolated local recurrent rectal cancer within the pelvis were scheduled for concurrent chemoradiotherapy, consisting of pelvic irradiation with a total dose of 50.4 Gy in 28 fractions. Chemotherapy was administered concurrently and included 85 mg/m2 oxaliplatin by venous infusion over 2 h on day 1, followed by 1,200 mg*m-2*day-1 of continuous venous infusion for 2 days. This regimen was repeated every 2 weeks for 6 cycles. The overall survival rate, responses, disease-free interval and toxicities were assessed. Results A total of 96 patients completed planned concurrent chemoradiation. Complete clinical responses were found in 13 of the 96 patients (14%), partial responses in 59 (61%), stable disease in 21 (22%) and disease progression in 3 (3%). The overall survival and disease-free survival rates in all the 96 patients were 45% and 14%, respectively. Conclusions The treatment of locally recurrent rectal cancer is complicated. Concurrent chemoradiation can increase disease-free survival and overall survival by increasing complete resection rate of locally recurrent tumors and even complete response of the tumors. Ongoing treatment strategies aim to enhance response rates and to accurately assess the extent of local recurrent tumor response to concurrent chemoradiation.

Selection of appropriate stage II colon cancer patients for adjuvant chemotherapy is critical for improving survival outcome. With the aim of identifying more high risk factors for stage II colon cancer, this study aimed to determine whether the neutrophil–lymphocyte ratio (NLR) is a predictor of surgical outcomes in patients with stage II colon cancer who do not receive adjuvant chemotherapy. We enrolled 1,040 stage II colon cancer patients who had undergone colectomy at a single institution between January 1995 and December 2005 and did not receive adjuvant chemotherapy. Of these 1,040 patients, 785 (75.5%) patients had a normal NLR and 255 (24.5%) had an elevated NLR. Those with an elevated NLR included patients ≥65 years, T4b cancer, carcinoembryonic antigen ≥5 ng/mL, and tumor obstruction or perforation. Patients with an elevated NLR had a significantly worse overall survival (OS) and worse disease-free survival (DFS) than did patients with a normal NLR. Cox regression analysis revealed that elevated NLR was an independent predictor of OS (P=0.012) but not DFS (P=0.255). An elevated NLR is an independent predictor of OS but not DFS in stage II colon cancer patients who did not receive adjuvant chemotherapy. Preoperative NLR measurement in stage II colon cancer patients may be a simple method for identifying patients with a poor prognosis who can be enrolled in further trials of adjuvant chemotherapy.

Objective The aim of this study was to investigate the effect of body mass index (BMI) on local recurrence of primary rectal cancer after open curative sphincter-saving resection. Background Increasing BMI was reported to be associated with a higher likelihood of local recurrence in male patients with rectal cancer. However, it remained unclear whether BMI exerts the same effects on local recurrence of rectal cancer in the upper and lower rectum. Methods Between January 1995 and December 2002, we investigated 1873 patients with well-documented body height and body weight who underwent curative anterior resection for primary rectal cancer in a single institution. The patients were assigned to 4 groups according to their BMI: underweight, normal, overweight, and obese. Results The frequency of local recurrence increased with an increase in the BMI in patients with lower rectal cancer. The local recurrence rates were 2.5% (2 of 79), 6.1% (48 of 782), 9.2% (39 of 424), and 13.8% (9 of 65) in underweight, normal, overweight, and obese patients with lower rectal cancer, respectively. These results were different from those of patients with upper rectal cancer. Independent risk factors for local recurrence in the lower rectal cancer group were BMI, resection margin, histologic grade of differentiation, depth of tumor invasion, and status of lymph node metastases. In the upper rectal cancer group, the depth of tumor invasion and histologic grade of differentiation reached statistical significance. Conclusions BMI exerted different effects on local recurrence of rectal cancer in the upper and lower rectum. Further, more aggressive adjuvant and/or neoadjuvant treatments should be considered for patients with tumor in the lower rectum and with higher BMI.

The conventional surgical treatment of anal squamous cell carcinoma is abdominoperineal resection. A new approach of combined radiotherapy and chemotherapy has been proposed following the observation of excellent local control. In this retrospective study, 40 cases of primary anal squamous cell carcinoma without distant metastasis were collected between 1979 and 1986 and the individual prognosis of the above two methods of treatment was evaluated. Group I (20 cases) received abdominoperineal resection with or without postoperative radiotherapy. Postoperative radiation was given if regional lymph node biopsy was positive. Group II (20 cases) received combined radiotherapy and chemotherapy with or without wide local excision. Radiation was delivered to the anus, pelvis, and bilateral inguinal nodal areas to a total dose of 5,500 rads. A continuous infusion of 5-FU was started on day 2 of the irradiation at a dose of 1,000 mg/m2 body surfaceiday for 5 days and a bolus injection of rnitomycin was given on day 2 at a dose of 10 mg/m2 body surface. The second course was given 1 month later to complete the chemotherapy. The wide local excision was performed if the disease still persisted after completion of combined radiotherapy and chemotherapy. All 40 cases were followed up for at least 5 years. All cases (100%) in group I survived 1 year, 18 cases (90%) 2 years, 14 cases (70%) 3 years, 10 cases (50%) 4 years, and 6 cases (30%) 5 years. Twenty cases (100%) in group II survived 1 year, 17 cases (85%) 2 years, 13 cases (65%) 3 years, 8 cases (40%) 4 years, and 5 cases (25%) survived 5 years. All the mortalities in both groups died of distant metastasis or abdominal carcinomatosis. From the above results, the overall survival rate of combined radiotherapy and chemotherapy was not significantly worse than that of convential abdominoperineal resection. In conclusion, combined radiotherapy and chemotherapy may be chosen as an alternative management in treating anal squamous cell carcinoma. © 1993 Wiley-Liss, Inc.

AIM: To evaluate the diagnostic accuracy, sensitivity, specificity of contrast-enhanced computed tomographic colonography in detecting local recurrence of colorectal cancer. METHODS: From January 2000 to December 2004, 434 patients after potentially curative resection for invasive colorectal cancer were followed up for a period ranging from 20 to 55 mo. Eighty of the four hundred and thirty-four patients showing strong clinical evidence for recurring colorectal cancer during the last follow-up were enrolled in this study. Each patient underwent contrast-enhanced computed tomographic colonography and colonoscopy on the same day. Any lesions, biopsies, identified during the colonoscopic examination, immediate complications and the duration of the procedure were recorded. The results of contrast-enhanced computed tomographic colonography were evaluated by comparing to those of colonoscopy, surgical finding, and clinical follow-up. RESULTS: Contrast-enhanced computed tomographic colonography had a sensitivity of 100%, a specificity of 83% and an overall accuracy of 94% in detecting local recurrent colorectal cancer. CONCLUSION: Conventional colonoscopy and contrast-enhanced tomographic colonography can complement each other in detecting local recurrence of colorectal cancer.