Implementation of Customized Homogenizing Devices in Radiotherapy for the Treatment of Non-Melanoma Skin Cancer: Three Case Reports.

Abstract

Background and Clinical Significance: In most cases, the success of radiotherapy in the treatment for skin cancer is limited, particularly due to the irregularities of the neoplasm's surfaces or even tissue discontinuity. Based on a comprehensive clinical assessment, the therapeutic approach for radiotherapy was established for the patients included in this study. Wax-paraffin (50:50) devices were custom-designed for radiotherapy treatment, confirming adequate homogeneity and conformity indices for doses of 55-66 Gy, and chemotherapy when necessary. Toxicity and treatment response were also assessed; Cases Presentation: For patient 1, two lesions located on the right nasolabial fold and right thigh were treated with radiation, and a 1 cm thick wax-paraffin surface bolus was designed, allowing for improved dose distribution and favorable local response. For patient 2, in addition to the thick wax-paraffin homogenizer, lead eye protectors were designed due to the location of the tumor, with the aim of protecting organs at risk. The treatment in this patient resulted in effective local response. Finally, for patient 3, with a lesion in the supraclavicular region extending to the left shoulder due to acantholytic squamous cell carcinoma with secondary carcinomatous lymphangitis, 1 cm thick wax-paraffin surface homogenizers were used; Conclusions: Due to the characteristics of the customized homogenizers, tumor lesion remission was successfully achieved in all three patients, highlighting both the advantages of these devices and their efficacy in dose distribution and local response in radiotherapy treatment of non-melanoma skin carcinoma.