| Effects of Concurrent Chemotherapy and Postoperative Prophylactic Paraaortic Irradiation for Cervical Cancer with Common Iliac Node Involvement |
| Tae Jin Han, Hong Gyun Wu, Hak Jae Kim, Sung Whan Ha, Soon Beom Kang, Yong Sang Song, Noh Hyun Park |
1Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea. wuhg@snu.ac.kr
2Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
3Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
4Cancer Reserch Institute, Seoul National University, Seoul, Korea. |
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| ABSTRACT |
PURPOSE:
To retrospectively assess the advantages and side effects of prophylactic Paraaortic irradiation in cervical cancer patients with common iliac nodal involvement, the results for survival, patterns of failure, and treatment-related toxicity.
MATERIALS AND METHODS:
From May 1985 to October 2004, 909 patients with cervical carcinoma received postoperative radiotherapy at the Seoul National University Hospital.
Among them, 54 patients with positive common iliac nodes on pathology and negative Paraaortic node were included in the study. In addition, 44 patients received standard pelvic irradiation delivered 50.4 Gy per 28 fractions (standard irradiation group), and chemotherapy was combined in 16 of them. The other 10 patients received pelvic irradiation at a dose of 50.4 Gy per 28 fractions in addition to Paraaortic irradiation at 45 Gy per 25 fractions (extended irradiation group). In addition, all of them received chemotherapy in combination with radiation. Follow-up times for pelvic and Paraaortic irradiation ranged from 6 to 201 months (median follow-up time, 58 months) and 21 to 58 months (median follow-up time, 47 months), respectively.
RESULTS:
The 4-year overall survival, disease free survival, and distant metastasis free survival in the standard irradiation group and extended irradiation group were 67.2% vs. 90.0% (p=0.291), 59.0% vs. 70.0% (p=0.568) and 67.5% vs.
90.0% (p=0.196), respectively. The most common site of first failure for the standard irradiation group was the paraaortic lymph node, while no paraaortic failure was observed in the extended irradiation group. Relatively, hematologic toxicity grade 3 or greater was common in the extended irradiation group (2/10 extended vs. 2/44 standard), while gastrointestinal toxicity of grade 3 or greater was lower (2/10 extended vs. 6/44 standard), and urologic toxicity of grade 3 or greater was observed in the standard irradition group only (0/10 vs. 3/44).
CONCLUSION:
Concurrent chemotherapy and prophylactic Paraaortic irradiation in patients with common iliac nodal involvement showed slightly improved clinical outcomes aside from increased hematologic toxicity, which was statistically insignificant. Considering the relatively small number of patients and short follow-up times, additional studies are needed to obtain more conclusive outcomes. |
| Key Words:
Cervical cancer, Radiotherapy, Common iliac lymph node, Paraaortic irradiation |
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