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1±è¿ìö/1Woo Chul Kim 1Á¶¿µ°©/1³ëÁرÔ/2±è±Í¾ð/2Á¤ÀºÁö/2¼­Ã¢¿Á/2È«¼ø¿ø/1Young Kap Cho/1John JK Loh/2Gwi Eon Kim/2Eun Ji Chung/2Chang Ok Suh/3Soon Won Hong

Abstract

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Purpose : The incidence of adenocarcinoma of the uterine cervix is low. Traditionally, Low
Dose Rate(LDR) brachytherapy has been used as a standard modality in the treatment for
patients with carcinoma of the uterine cervix. The purpose of this report is to evaluate the
effects of the High dose rate (HDR) brachytherapy in the patients with adenocarcinoma of the
uterine cervix compared with the LDR.
Materials and Methods : From January 1971 to December 1992, 106 patients of
adenocarcinoma of uterine cervix were treated with radiation therapy in the Department of
Radiation Oncology, Yonsei University with curative intent. LDR brachytherapy was carried
out on 35 patients and 71 patients were treated with HDR brachytherapy. In LDR Group, 8
patients were in stage I, 18 in stage II and 9 in stage III. External radiation therapy was
delivered with 10 MV X-ray, daily 2 Gy fractionation, total dose 40~46 Gy (medial 48 Gy).
And LDR Radium intracvitary irradiation was performed with Henschke applicatior, 22~59 Gy
to point A (median 43 Gy). In HDR Group, there were 16 patients in stage I, 38 in stage II
and 17 in stage III. The total dose of external radiation was 40~61 Gy(median 45 Gy), daily
1.8~2.0 Gy. HDR Co-60 intracavitary irradiation was performed with RALS (Remote
Afterloading System), 30~57 Gy (medial 39 Gy) to point A, 3 times a week, 3 Gy per
fraction.
Results : The 5-year overall survival rate in LDR Group was 72.9%, 61.9%, 45.0% in stage
I, II, III, respectively and corresponding figures for HDR were 87.1%, 58.3%, 41.2%,
respectively (p£¾0.05). There was no statistical difference in terms of the 5-year overall
survival rate between HDR Group and LDR Group in adenocarcinoma of the uterine cervix.
There was 11% of late complication rates in LDR Group and 27% in HDR Group. There were
no prognostic factors compared HDR with LDR group. The incidence of the late complication
rate in HDR Group stage II, III was higher than that in LDR Group(16.7% vs. 31.6% in stage
II, 11.1% vs. 35.3% in stage III, p£¾0.05). Although the incidence of radiation induced late
complication rate was higher in HDR Group stage II and III patients than that in the LDR
Group, statistical significance was not detected and within acceptable level.
Conclusion : There was no difference in terms of 5-year survival rate and failure pattern in
the patients with adenocarcinoma of the uterine cervix treated with HDR and LDR
brachytherapy. Even late complication rates was higher in the HDR group it was an
acceptable range. This retrospective study suggests that HDR brachytherapy seems to replace
the LDR brachytherapy in the adenocarcinoma of the uterine cervix. However, further studies
will be required to refine the dose rate effects.

Å°¿öµå

Adenocarcinoma; Uterine cervix; High dose-rate; Low dose-rate;

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