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  • Title: Malignant tumors of the nasal cavity and paranasal sinuses: long-term outcome and morbidity with emphasis on hypothalamic-pituitary deficiency.
    Author: Snyers A, Janssens GO, Twickler MB, Hermus AR, Takes RP, Kappelle AC, Merkx MA, Dirix P, Kaanders JH.
    Journal: Int J Radiat Oncol Biol Phys; 2009 Apr 01; 73(5):1343-51. PubMed ID: 18963535.
    Abstract:
    PURPOSE: To evaluate the long-term outcome after surgery and radiotherapy for patients with sinonasal cancer and assess late toxicity, with special emphasis on hypothalamic-pituitary dysfunction. METHODS AND MATERIALS: A retrospective analysis of 168 patients treated for sinonasal cancer in a single institute between 1986 and 2006. A more detailed analysis was performed on a subgroup of 76 patients with adenocarcinoma or squamous cell carcinoma treated with curative intent. Long-term survivors were evaluated for late toxicity by a multidisciplinary team using the late effects of normal tissues (LENT SOMA) scoring system. Additional endocrinologic tests were performed for assessment of hypothalamic-pituitary function. RESULTS: Five-year actuarial local control and overall survival rates were 62% and 35% for all patients and 64% and 42% for the subgroup with squamous cell carcinoma and adenocarcinoma. In multivariate analysis, T stage was the only significant factor predicting local relapse (79% at 5 years for T1-T3 vs. 53% for T4; p = 0.006). Sinonasal mucosal melanomas had the highest rate of regional failure (33% at 5 years). Thirteen of 21 patients (62%) evaluated at the late morbidity clinic had hormonal disturbances, of whom 5 (24%) had definitive evidence of hypopituitarism with multiple hormonal deficiencies. CONCLUSION: Local failure is the dominant cause of treatment failure for patients with sinonasal cancer, with T4 stage the only independent predictor. Because of a high rate of radiation-induced hypopituitarism, we recommend endocrinologic surveillance for these patients.
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