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Title: Dose-Effect Relationships for Recurrence of Keloid and Pterygium After Surgery and Radiotherapy

Abstract

Purpose: To show radiation dose-response relationships for recurrence of keloid and pterygium after radiotherapy following surgery. Methods and Materials: Using PubMed, we performed a retrospective review of articles reporting incidences and/or dose-response relationships for recurrence of keloid and pterygium after radiotherapy following surgery. The irradiation regimens identified were normalized by use of the linear-quadratic model; biologically effective doses (BEDs) were calculated. Results: For keloid recurrence after radiotherapy following keloid removal, with either teletherapy or brachytherapy, the recurrence rate after having delivered a BED greater than 30 Gy is less than 10%. For pterygium recurrence after bare sclera surgery and {sup 90}Sr {beta}-irradiation, a BED of about 30 Gy seems to be sufficient also to reduce the recurrence rate to less than 10%. Conclusions: Most of the doses in the radiotherapy schemes used for prevention of keloid recurrence after surgery are too low. In contrast, the doses applied in most regimens to prevent pterygium recurrence are too high. A scheme with a BED of 30 to 40 Gy seems to be sufficient to prevent recurrences of keloid as well as pterygium.

Authors:
 [1]; ;  [2]
  1. Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands), E-mail: H.B.Kal@UMCUtrecht.nl
  2. Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands)
Publication Date:
OSTI Identifier:
21276795
Resource Type:
Journal Article
Journal Name:
International Journal of Radiation Oncology, Biology and Physics
Additional Journal Information:
Journal Volume: 74; Journal Issue: 1; Other Information: DOI: 10.1016/j.ijrobp.2008.12.066; PII: S0360-3016(09)00046-7; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0360-3016
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BRACHYTHERAPY; DOSE-RESPONSE RELATIONSHIPS; EYES; FIBROBLASTS; IRRADIATION; RADIATION DOSES; STRONTIUM 90; SURGERY

Citation Formats

Kal, Henk B., Veen, Ronald E., and Juergenliemk-Schulz, Ina M. Dose-Effect Relationships for Recurrence of Keloid and Pterygium After Surgery and Radiotherapy. United States: N. p., 2009. Web. doi:10.1016/j.ijrobp.2008.12.066.
Kal, Henk B., Veen, Ronald E., & Juergenliemk-Schulz, Ina M. Dose-Effect Relationships for Recurrence of Keloid and Pterygium After Surgery and Radiotherapy. United States. doi:10.1016/j.ijrobp.2008.12.066.
Kal, Henk B., Veen, Ronald E., and Juergenliemk-Schulz, Ina M. Fri . "Dose-Effect Relationships for Recurrence of Keloid and Pterygium After Surgery and Radiotherapy". United States. doi:10.1016/j.ijrobp.2008.12.066.
@article{osti_21276795,
title = {Dose-Effect Relationships for Recurrence of Keloid and Pterygium After Surgery and Radiotherapy},
author = {Kal, Henk B. and Veen, Ronald E. and Juergenliemk-Schulz, Ina M.},
abstractNote = {Purpose: To show radiation dose-response relationships for recurrence of keloid and pterygium after radiotherapy following surgery. Methods and Materials: Using PubMed, we performed a retrospective review of articles reporting incidences and/or dose-response relationships for recurrence of keloid and pterygium after radiotherapy following surgery. The irradiation regimens identified were normalized by use of the linear-quadratic model; biologically effective doses (BEDs) were calculated. Results: For keloid recurrence after radiotherapy following keloid removal, with either teletherapy or brachytherapy, the recurrence rate after having delivered a BED greater than 30 Gy is less than 10%. For pterygium recurrence after bare sclera surgery and {sup 90}Sr {beta}-irradiation, a BED of about 30 Gy seems to be sufficient also to reduce the recurrence rate to less than 10%. Conclusions: Most of the doses in the radiotherapy schemes used for prevention of keloid recurrence after surgery are too low. In contrast, the doses applied in most regimens to prevent pterygium recurrence are too high. A scheme with a BED of 30 to 40 Gy seems to be sufficient to prevent recurrences of keloid as well as pterygium.},
doi = {10.1016/j.ijrobp.2008.12.066},
journal = {International Journal of Radiation Oncology, Biology and Physics},
issn = {0360-3016},
number = 1,
volume = 74,
place = {United States},
year = {2009},
month = {5}
}