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Year : 2019  |  Volume : 11  |  Issue : 5  |  Page : 67-71

Treatment of Stage I hard palate cancer with high-dose-rate brachytherapy using molds: Cost-based perspective

1 Department of Oral and Maxillofacial Pathology, MNR Dental College and Hospital, Sangareddy, Telangana, India
2 Department of Radiotherapy and Oncology, Kurnool Medical College and Government General Hospital, Kurnool, Andhra Pradesh, India

Correspondence Address:
Dr. Kranti Kiran Reddy Ealla
Department of Oral and Maxillofacial Pathology, MNR Dental College and Hospital, Sangareddy, Telangana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JPBS.JPBS_193_18

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Introduction: Treatment of T1N0M0 (T1 = greatest tumor size < 2cm, N0 = regional lymph nodes not palpable by clinical examination, M0 = No evidence of distant metastasis) (Green FL, Page DL, Fleming ID, Fritz AG, Balch CM, Haller DG, Morrow M. AJCC Cancer Staging Manual. New York: Springer; 2002) lesions of hard palate carcinoma by radiotherapy carries equal results with the advantage of cosmesis and can avoid surgical complications. External beam radiotherapy (EBRT) will last for 6–8 weeks. Feasibility of high-dose-rate (HDR) intraoral mold brachytherapy is an alternative to EBRT, which is highly effective and reduces treatment time and is also cost-effective one, which can be practiced in a center without Linac facilities. Materials and Methods: Custom-made surface molds were prepared for each patient with dental wax, and HDR after loading tubes were placed as per tumor volume. After simulation, with the help of simulation check films, treatment was planned with PLATO Treatment Planning System (TPS) and optimization was carried out. Results: We treated six cases of T1N0M0 hard palate carcinoma by HDR intraoral mold brachytherapy. A total dose of 42–45 Gy in 14–15 fractions with 3 Gy per fraction, two fractions per day with a gap of minimum 6h was administered between two fractions. (Gray [Gy] is the unit of absorbed dose of radiation by tissues. A total radiation dose of 42–45 Gy will be delivered as per radiobiological principles, in divided number of fractions, thereby the given dose of radiation will kill the major portion of the tumor cells, which were in various sensitive phases of cell cycle and at the same time, less damage to the normal tissues. The time between two fractions of radiation is 6h, which is the experimentally proven optimal time for recovery of normal tissues from radiation damage and tumor tissues to enter into the sensitive phases of the cell cycle to radiation damage-late G2 and S phases). There was confluent mucositis and all the patients had a complete response and none of the patients had relapse. Conclusion: Early (T1N0M0) lesions of hard palate carcinoma with HDR intraoral mold brachytherapy will shorten overall duration of treatment time with excellent local control and toxicities as compared with EBRT.

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