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Single-fraction radiation: A promising adjuvant therapy to prevent keloid recurrence


 Department of Radiation Oncology, Amrita Institute of Medical Sciences, Amrita University, Kochi, Kerala, India

Correspondence Address:
K Sruthi,
Department of Radiation Oncology, Amrita Institute of Medical Sciences, Amrita University, Kochi - 682 041, Kerala
India
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Source of Support: None, Conflict of Interest: None

Introduction: Keloids are characterized by collection of atypical fibroblasts with excessive deposition of extracellular matrix components. Keloids are prone to high recurrence (50%–80%) with unimodality treatment. Radiation is a promising approach among the adjuvant modalities in vogue though consensus is lacking on dose-fractionation schedule. Aim: The present study aimed to analyze the efficacy of single-fraction high-dose adjuvant radiotherapy to prevent keloid recurrence. Materials and Methods: Details of patients treated for keloids using external beam radiation therapy from January 2011 to December 2016 were retrieved from electronic medical records and radiation therapy charts and analyzed. Results: Thirty-seven keloid lesions in thirty patients were analyzed. Keloids received radiation within 24–72 h postsurgery using 6 MeV electron beam. 45.9% of keloids were in the chest wall. Dose ranged between 5 Gy and 12 Gy in 1–3 fractions. Eight Gy was used in 78.4%. The single fraction was preferred in 91.9%. Good cosmesis was achieved in all except three who had wound dehiscence. Median follow-up was 32.67 months. 16.2% had recurrence. Median time to recur was 13.6 months, and median recurrence-free interval 21.23 months. Among those who received 8 Gy single fraction, 73.4% remained recurrence-free at 5 years. Conclusion: Albeit a retrospective analysis, ours is the only study in literature offering 8 Gy single dose, using electrons, as a postoperative adjuvant treatment to prevent recurrence in keloids. Our recurrence rates were similar to that quoted in published series. This hence can be validated in further studies as it is cosmetically acceptable, safe, painless, and cost-effective with good patient compliance.


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    -  Sruthi K
    -  Chelakkot PG
    -  Madhavan R
    -  Nair RR
    -  Dinesh M
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