Objective: This study evaluated and quantified the feasibility of submandibular gland (SMG) sparing in intensity-modulated radiotherapy (IMRT) for N0-stage nasopharyngeal carcinoma (NPC).
Methods: Ten patients with N0-stage NPC were enrolled in the study. Four IMRT plans were produced for each, with different limiting conditions. In plan A, SMG sparing was ignored; in plans B, C and D, the mean dose to SMGs was restricted to 39 Gy. In addition, at least 95% of planning target volume (PTV)-IIa (PTV of clinical target volume involving level IIa lymph node) in plan C and 90% of PTV-IIa in plan D were required to have a 60 Gy covering.
Results: The average mean dose to SMGs was 54.6 ± 3.6 Gy in plan A and was lower 39.3 ± 0.3, 49.3 ± 1.9 and 46.7 ± 2.8 Gy in plans B, C and D, respectively. The volume of PTV-IIa covered by 60 Gy was 98.9%, 81.6%, 95.2% and 90.8% in plans A, B, C and D, respectively, and showed a parallel association between dose reduction to SMGs and the covering deficit of PTV-IIa.
Conclusion: Reducing the mean dose received by SMG to 39 Gy or less in IMRT for N0-stage NPC is feasible.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4067020 | PMC |
| http://dx.doi.org/10.1259/bjr.20130651 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transoral approach for hilo-parenchymal submandibular stones: outcomes and predictors of success.
Oral Surg Oral Med Oral Pathol Oral Radiol
October 2024
Department of Oral and Maxillofacial Surgery, The Baruch Padeh "Tzafon" Medical Center, Poriya, Israel; Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.
Objective: To evaluate the efficacy and safety of transoral surgical management for complex submandibular gland (SMG) stones.
Study Design: A retrospective cohort study of 240 patients treated for sialolithiasis between 2015 and 2018, focusing on 57 cases of SMG stones that underwent stone removal procedures. Treatment methods, success rates, and complications were analyzed using Kaplan-Meier analysis, Cox proportional hazards regression, and multiple logistic regression.
Long-term effect and safety of mesenchymal stromal cell therapy for radiation-induced hyposalivation in head and neck cancer survivors: A randomised, phase-2, trial.
Clin Cancer Res
January 2025
Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Background: The long-term effect of adipose-derived mesenchymal stromal cells (ASCs) to restore radiation-induced salivary gland hypofunction in previous head and neck cancer patients have not been validated in larger settings.
Methods: The study was the 12-months follow-up of a randomised trial, including patients with hyposalivation. Patients were randomised to receive allogeneic ASCs or placebo in the submandibular glands.
Microarchitecture and Crystalline Composition: A Comprehensive Exploration of Salivary Gland Stones.
Oral Dis
January 2025
Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China.
Objective: To investigate the microarchitecture and crystalline composition of sialoliths and to explore their formation mechanisms.
Methods: Sixty-six sialolith samples (51 from the submandibular glands and 15 from the parotid glands) were retrospectively collected. Their diameter and quality were measured.
Chronic stress triggers impairments of the redox status of salivary glands associated with different histological responses in rats.
Stress
December 2025
Laboratory of Functional and Structural Biology, Biological Sciences Institute, Federal University of Pará, Belém, Brazil.
Stress occurs as a reaction to mental and emotional pressure, anxiety, or scarring. Chronic stress is defined as constant submission to these moments. It can affect several body systems, increase blood pressure, and weaken immunity, thereby interfering with physiological health processes.
View Article and Find Full Text PDF[Congenital duct orifice ectopia of bilateral submandibular gland with left sublingual gland cyst: a case report].
Zhonghua Kou Qiang Yi Xue Za Zhi
January 2025
Department of Oral and Maxillofacial Surgery, Hebei General Hospital, Shijiazhuang050000, China.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!