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J Korean Soc Ther Radiol > Volume 12(1); 1994 > Article
Journal of the Korean Society for Therapeutic Radiology 1994;12(1): 99-108.
Concurrent Chemoradiotherapy Results in Patients with Anal Cancer
Weon Kuu Chung, Soo Kon Kim, Chang Geol Lee, Jin Sil Seong, Gwi Eon Kim
1Department of Radiation Oncology, Presbyterian Medical Center, Chonju, Korea.
2Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea.
ABSTRACT
Among the 63 patients with histopathologically proven primary squamous cell anal cancer who were managed in Presbyterian Medical Center and Yonsei University Cancer from Jan. 1971 to Dec. 1991, 34 patients, who were managed with surgery alone (abdominoperineal resection) or post-operative radiotherapy and concurrent chemoradiotherapy were analyzed. With mean follow up time of 81.3 months, 30 patients (88%) were followed up from 17 to 243 months. In methods, 10 patients were treated with surgery alone. 9 patients were treated with combined surgery and postoperative radiotherapy (59~60 Gy in 28~30 fractions). 15 patients were treated with concurrent chemoradiotherapy. Chemotherapy (Mitomycin C 15 mg/squ, bolus injection day 1;5-FU, 750 mg/squ, 24hr infusion, day 1 to 5) and radiotherapy started the same day. A dose of 30 Gy was given to the tumor and to the pelvis including inguinal nodes, in 15 fractions. After 2 weeks a boost of radiotherapy (20 Gy) to the ano-perineal area and second cycle of chemotherapy completed the treatment. The overall 50year survival rate was 56.2%. concurrent chemoradiotherapy group was 70% and surgery alone group was 16.7%. According to the cox proportional harzard model, there was significant different between survival with concurrent chemoradiotherapy and surgery alone (p=0.0129), but post-operative radiotherapy was 64.8%, which was not stastically significant (p=0.1412). In concurrent chemoradiotherapy group, the anal function preservation rate was 87% and the severe complication rate (grade 3 stenosis and incontinence) was 13.3%. In conclusion, we conclude that the concurrent chemoradiotherapy may be effective treatment modality in patients with anal cancer
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