نتایج جستجو برای: head and neck irradiation
تعداد نتایج: 16866348 فیلتر نتایج به سال:
OBJECTIVE To assess the efficacy of limiting treatment to the involved neck by way of neck dissection and adjuvant radiotherapy and reserving other therapies for salvage in the management of metastatic cervical squamous cell carcinoma from an unknown head and neck primary site. DESIGN Retrospective study of patients whose clinicopathological data had been prospectively collected in a comprehe...
granular cell tumor is a rare benign neoplasm most commonly appears in the head and neck region, especially in the tongue, cheek mucosa, and palate. occurrence in limbs is even rarer. these tumors account for approximately 0.5% of all soft tissue tumors. granular cell tumor can also affect other organs including skin, breast, and lungs. local recurrence and metastasis is potentially higher in m...
BACKGROUND We report our experience with patients who received re-irradiation to the head and neck area for locoregional recurrences (LRR) or second primaries (SP) in a previously irradiated field. METHODS We reviewed 27 consecutive patients with a diagnosis of LRR or SP head and neck carcinoma treated with a second course of radiotherapy between April 2004 and July 2012. The main outcome mea...
results of the 53 neck dissection specimens, histopathology showed metastases in 16 cases. the overall accuracy of usgfna, us and palpation was 96%, 68% and 70%, respectively. the specificity of usgfna was superior to palpation and us alone. usgfna had the highest sensitivity, predictive value and accuracy in detecting cervical metastases compared with other performed tests. conclusion in our s...
BACKGROUND Radiation is a primary or secondary therapeutic modality for treatment of head and neck cancer. A common side effect of irradiation to the neck and neck region is xerostomia caused by salivary gland dysfunction. Approximately 40,000 new cases of xerostomia result from radiation treatment in the United States each year. The ensuing salivary gland hypofunction results in significant mo...
BACKGROUND This study reports the outcomes for patients with head and neck cancer who received reirradiation with palliative or curative intent. METHODS A retrospective review of 41 patients treated with curative (n = 28) or palliative (n = 13) reirradiation was conducted. Survival was calculated from the start of the reirradiation. Radiation-related toxicities were classified according to Ra...
BACKGROUND To test the hypothesis that the therapeutic ratio of intensity-modulated photon therapy using helical tomotherapy (HT) for retreatment of head and neck carcinomas can be improved by robust intensity-modulated proton therapy (IMPT). METHODS Comparative dose planning with robust IMPT was performed for 7 patients retreated with HT. RESULTS On average, HT yielded dose gradients steep...
Head and neck irradiation may lead to accelerated atherosclerosis over several years. Delayed stroke has been described after head and neck irradiation administered for a number of conditions. However, brain stem stroke has only rarely been associated with irradiation. We report a patient with medullary hemorrhagic infarction 6 years after radiotherapy for nasopharyngeal carcinoma. A 42-year-ol...
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