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Modified partial hyperfractionation in radiotherapy for bulky uterine cervical cancer: reduction of overall treatment time.

Authors
Chun, M; Kang, S; Ryu, H; Chang, K; Oh, Y; Ju, H; Lee, E
Citation
International journal of radiation oncology, biology, physics, 47(4):973-977, 2000
Journal Title
International journal of radiation oncology, biology, physics
ISSN
0360-30161879-355X
Abstract
PURPOSE: The purpose of this study was to assess the feasibility and toxicity of modified fractionation of external beam radiation with the intention of reducing the overall treatment time (OT) by 1 week in cervical cancer.



METHODS AND MATERIALS: Thirty-one patients (Group 1, n = 31) with bulky cervical cancer (>/= 4 cm with Stage II and III, >/= 5 cm with Stage IB2) were entered into the twice a day (b.i. d.) protocol (18 Gy/10 fx in 2 weeks followed by 18 Gy/12 fx, b.i.d. in 6 days, then midline block at 36 Gy with 45 Gy to the whole pelvis and 51-59 Gy to the parametrium). These patients underwent high-dose-rate brachytherapy with 4 Gy/fx x 7 to point A, biweekly. During the same period, patients with non-bulky tumors (Group 2, n = 31) received conventional treatment and similar brachytherapy.



RESULTS: The OT of Group 1 was 7 weeks or less in 61.3%, 7.1-8 weeks in 29%, and more than 8 weeks in 9.7% (19.4%, 51.6%, and 29% in Group 2, respectively, p = 0.003). Incidences of acute complications and treatment breaks were similar in both groups. Late complication (rectal bleeding) occurred only in Group 1 (13%, 4/31), but was self-limited. Locoregional failures occurred within 2 years after completion of radiation therapy in both groups (16% and 13% in Group 1 and 2, respectively, with minimum and median follow-ups of 2 years and 34 months).



CONCLUSION: Partial hyperfractionation on the third week of radiation permitted patients to finish their treatment with shorter OT without excessive acute complications and with acceptable grade 2 late rectal bleeding complications. This treatment scheme may be an effective method for the improvement of local control of bulky cervical cancer.
MeSH terms
AdultAgedBrachytherapy/adverse effectsDiarrhea/etiology*Dose FractionationFeasibility StudiesFemaleGastrointestinal Hemorrhage/etiologyHumansMiddle AgedNeoplasm Recurrence, LocalNeoplasm StagingRadiation Injuries/complicationsRectum/radiation effectsSurvival RateTime FactorsUterine Cervical Neoplasms/mortality/pathology/*radiotherapy
PMID
10863067
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Obstetrics & Gynecology
Journal Papers > School of Medicine / Graduate School of Medicine > Medical Science
Journal Papers > School of Medicine / Graduate School of Medicine > Pathology
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
Journal Papers > School of Medicine / Graduate School of Medicine > Radiation Oncology
AJOU Authors
전, 미선강, 승희유, 희석장, 기홍오, 영택주, 희재이, 은주
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