Radiation induced brachial plexopathy in head and neck cancer patients treated with definitive radiotherapy and correlation with disease characteristics and dosimetric parameters.

Background: Definitive concurrent chemoradiotherapy (CRT) is the standard of care in advanced stages of head and neck cancer (HNC). With evident increase in survival rate there is also simultaneous increase in toxicity affecting the quality of life. One of the less researched late toxicity is radiation induced brachial plexopathy (RIBP). In this dosimetric study we intent to contour the brachial plexus (BP) as an organ at risk (OAR) and determine the factors that contribute to dose variations to BP, and clinically evaluate the patients for RIBP during follow-up using a questionnaire. Materials and methods: 30 patients with HNC planned for CRT from September 2020 to June 2022 were accrued. Patients were treated to a dose of 6600 cGy with intensity modulated radiotherapy using the simultaneous integrated boost technique. From the dose-volume histogram (DVH) statistics the BP volume, Dmax and other parameters like V66, V60 were assessed and was correlated with respect to primary tumour and nodal stage. Results: On corelation, more than the T stage, the N stage and the primary location had a significant impact on the Dmax. With a median follow-up of 17.9 months, the incidence of RIBP was 6.67%. The 2-year disease free survival and the 2-year overall survival were 53.7% and 59.4%, respectively. Conclusions: In oropharyngeal/hypopharyngeal primaries and in advanced nodal disease, BP receives higher doses contributing to RIBP. Primary tumor and nodal stage also impacted V60 and V66 of BP. Hence, contouring of BP as an OAR becomes imperative, and respecting the DVH parameters is essential.

Analgesic and Opioid Use in Pain Associated with Head-and-Neck Radiation Therapy.

AIM: The aim of the study is to find the incidence of analgesic and opioid use in pain associated in HNC patient undergoing radiation therapy. BACKGROUND: Radiation therapy with concurrent chemotherapy has become the standard of care in head and neck cancer. Acute toxicity like mucositis and dysphagia has increased with aggressive therapy. Pain is an invariable accompaniment of oropharyngeal mucositis, which leads to decreased quality of life and treatment break. MATERIALS AND METHODS: This is a retrospective review of radiation charts of head and neck patients treated from January 2013 to June 2017 at St. John's Medical college and Hospital, Bengaluru. RESULTS: A total of 138 (92%) patients required analgesia during the radiation course. The analgesic consumption started increasing from week 2, peaked at week 5, persist for 6 weeks and started declining after week 10. 52% patients required opioids, especially from week 4 to week 8. 15% of patients required Morphine, the maximum use in week 6 to week 8. The use of chemotherapy (P = 0.031), presence of grade 3 mucositis (P = 0.010) and grade 3 dysphagia (P = 0.001) were significantly associated with severe pain (use of strong opioids). All 80 (100%) patients receiving concurrent chemotherapy required analgesia. More than 80% patients required opioids and one fourth required strong analgesic in concurrent chemotherapy group. CONCLUSION: More than 90% of all head and neck cancer patient undergoing radiation therapy experience therapy related pain for more than 6 weeks. 53% of the patients require opioids and 15% require strong opioids. The use of concurrent chemotherapy was significantly associated with severe pain.

Early Competing Deaths in Locally Advanced Head-and-Neck Cancer.

INTRODUCTION: The competing (noncancer) deaths have increased with aggressive treatment approach and better disease control in locally advanced head-and-neck cancer. AIM: The aim of this study is to find incidence, cause and predictors of early competing mortality in locally advanced head-and-neck cancer patients undergoing combined modality therapy. SUBJECTS AND METHODS: In this retrospective study, a total of 125 locally advanced head-and-neck patients treated from January 2013 to June 2017 were analyzed. The total number of deaths, cause, and the time of death from the start of therapy was recorded. To study the risk factors of competing deaths, univariate and multivariate logistic regression was applied. Data were analyzed using SPSS v. 24 software. RESULTS: A total of 51 deaths (31 cancer deaths and 20 competing deaths) recorded at a median follow-up of 16 months (1-62 months). The incidence of early competing mortality was 12% (n = 15) with a median time of 2.7 months from treatment initiation. Sepsis was major cause of early competing death (n = 13). On univariate and multivariate logistic regression analysis, competing death was significantly associated with pharyngeal (oropharynx, hypopharynx, and larynx) site primary (odds ratio [OR] = 3.562; 95% confidential interval [CI] = 1.207-10.517; P = 0.016), and Stage IVA/IVB disease (OR = 5.104; 95% CI = 1.123-23.202; P = 0.021). CONCLUSION: Competing deaths is one of the multifaceted problems in locally advanced head-and-neck cancer patients. Sepsis being single most cause of early competing deaths in Stage IVA/IVB pharyngeal and laryngeal cancer.

A comparison of conventional and accelerated hypofractionated radiotherapy in definitive chemoradiation for locally advanced head and neck carcinoma: a retrospective cohort study.

PURPOSE: The study evaluates accelerated hypofractionated radiotherapy (AHRT) compared to conventional fractionation radiotherapy (CFRT) in patients with locally advanced head and neck cancer (LAHNC) receiving definitive chemoradiation therapy. MATERIALS AND METHODS: The study includes a retrospective cohort analysis of 120 patients. CFRT arm (n = 65) received 2 Gy per fraction to a dose of 70 Gy over 7 weeks in a three-volume approach, whereas the AHRT arm (n = 55) received 2.2 Gy per fraction to a dose of 66 Gy in 6 weeks with a two-volume approach. The primary outcome was overall survival (OS). RESULTS: With a median follow-up of 18.9 months, 23 patients died in the AHRT arm, and 45 deaths in the CFRT arm. The median OS was 23.4 and 37.63 months in the CFRT and AHRT arms, respectively (hazard ratio [HR] = 0.709; 95% confidence interval [CI], 0.425-1.18; p = 0.189). The median time to loco-regional control was 33.3 months in the CFRT arm and was not reached in the patient group receiving AHRT (HR = 0.558; 95% CI, 0.30-1.03; p = 0.065). The median progression-free survival was 15.9 months in the CFRT arm and 26.9 months in the AFRT arm (HR = 0.801; 95% CI, 0.49-1.28; p = 0.357). Out of 11 acute toxic deaths, eight were in the CFRT arm. CONCLUSION: The study showed a trend towards benefit in terms of locoregional control in the AHRT arm and similar OS. A longer follow-up of patients receiving AHRT is required to assess the benefit.