Background: During the COVID-19 pandemic, pedicle flaps instead of free flap transfer were recommended for head and neck reconstruction to reduce infection risk. Boron neutron-capture therapy in Japan was clinically approved in 2020 as a salvage radiotherapy for recurrent head and neck cancer following chemoradiotherapy. The efficacy and safety of salvage surgery following boron neutron-capture therapy remain unclear.
Case Report: We describe a 57-year-old male with crT4aN0M0 oral cancer after three different forms of radiotherapy including boron neutron-capture therapy, treated by salvage partial maxillectomy with both buccal fat pad and nasoseptal flaps. His postsurgical course was successful, without tracheostomy, and he had no Clavien- Dindo grade 3 or 4 complications. The pathological diagnosis was T4a squamous cell carcinoma with a negative surgical margin. No recurrence or metastasis had occurred at 113 days postoperatively. No opioid consumption was needed postoperatively.
Conclusion: Pathological negative margins were achieved in this case and there were no severe complications. Further accrual of cases salvage surgery following boron neutron-capture therapy is required to clarify treatment strategies for recurrent head and neck cancer.
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http://dx.doi.org/10.21873/anticanres.15642 | DOI Listing |
Pharmaceutics
January 2025
Key Laboratory of Molecular Biophysics, Institute of Biophysics, School of Health Sciences & Biomedical Engineering, Hebei University of Technology, Tianjin 300401, China.
Brain diseases pose significant treatment challenges due to the restrictive nature of the blood-brain barrier (BBB). Recent advances in targeting macromolecules offer promising avenues for overcoming these obstacles through receptor-mediated transcytosis (RMT). We summarize the current progress in targeting brain drug delivery with macromolecules for brain diseases.
View Article and Find Full Text PDFAppl Radiat Isot
January 2025
Institute of Nuclear Engineering and Science, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan; Nuclear Science and Technology Development Center, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan. Electronic address:
In clinical boron neutron capture therapy (BNCT), the distribution of dose to a heterogeneous medium that is predicted by a treatment planning system (TPS) should be experimentally validated. A head phantom specifically developed for this purpose is described and demonstrated herein. The cylindrical phantom exhibits distinct regions made from four materials (polymethyl methacrylate, calcium phosphate, air, and boric acid) to approximate a head structure with explicitly defined skin, skull, and brain tissue with a cavity and tumor within.
View Article and Find Full Text PDFAppl Radiat Isot
January 2025
Department of Otolaryngology Head and Neck Surgery, Osaka Medical and Pharmaceutical University, Takatsuki, Japan; BNCT Joint Clinical Institute, Osaka Medical and Pharmaceutical University, Takatsuki, Japan.
Purpose: Boron neutron capture therapy (BNCT) perform as a treatment option for locally advanced or recurrent unresectable head and neck cancers since June 2020 in Japan. The effect of BNCT on parotid carcinoma, which presents a variety of histologic types, remains unclear. The object of this study was to investigate the antitumor efficacy of BNCT against parotid gland carcinoma by focusing on LAT1, which is involved in the uptake of L-BPA, the boron compound used in BNCT.
View Article and Find Full Text PDFA 77-year-old man was referred to our department because of macrohematuria, oliguria, and a serum creatinine level of 2.47 mg/dL during boron neutron capture therapy (BNCT) for oropharyngeal cancer. At baseline, his creatinine level had been 0.
View Article and Find Full Text PDFAppl Radiat Isot
January 2025
Department of Molecular and Genomic Biomedicine, Nagasaki University Graduate School of Biomedical Sciences, 852-8523, Nagasaki, Japan; Central Radioisotope Division, National Cancer Center Research Institute, 104-0045, Tokyo, Japan; Division of BNCT, EPOC, National Cancer Center, Tokyo, Japan; Division of Chemotherapy and Clinical Cancer Research, National Cancer Center Research Institute, 104-0045, Tokyo, Japan. Electronic address:
Boron neutron capture therapy (BNCT) is based on nuclear reactions between thermal neutron and boron-10 preferentially distributed in the cancer cells. B-boronophenylalanine (BPA) is the approved drug for treatment of oral cancers for BNCT. However, the predictive biomarkers to evaluate therapeutic efficacy and side-effects have not been clarified yet.
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