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  • Title: [Lymph node metastases in paranasal sinus carcinoma: prognostic value and treatment].
    Author: Cantù G, Bimbi G, Fabiani F, Guzzo M, Mattavelli F, Pizzi N, Riccio S, Squadrelli M.
    Journal: Acta Otorhinolaryngol Ital; 2002 Oct; 22(5):273-9. PubMed ID: 12510338.
    Abstract:
    The purpose of this report is to assess, on the basis of a sizeable study, the prognostic value of lymph node metastases in paranasal sinus carcinoma and, in particular, in squamous cell carcinoma of the maxillary sinus. We have reviewed the charts of 601 cases of paranasal sinus carcinoma between 1970 and 1999. All of the patients were treated surgically, alone or associated with chemotherapy and/or radiotherapy. The maxillary sinus tumors numbered 379 (153 squamous cell carcinomas, 15 undifferentiated carcinomas, 94 adenoid cystic carcinomas, 19 adenocarcinomas, 98 mesenchymal tumors and rare forms) and the ethmoidal tumors were 222 (117 adenocarcinomas, 27 squamous cell carcinomas, 16 adenoid cystic carcinomas, 13 undifferentiated carcinomas, 49 other histological forms). Lymph node metastases in ethmoidal tumors were rare, with the exception of undifferentiated carcinoma (46.1%). The percentages of metastatic squamous cell carcinoma of the maxillary sinus upon presentation were: T2 15.5%, T3 7%, and T4 4%. All these patients underwent lymph node excision. The metastases successive to treatment of the primary tumor were: T2 16.9%, T3 8.8%, and T4 12%. 75% of these late metastases occurred contemporaneously with a recurrence of T and only 5 (25%) constituted the single reawakening of disease; four of these patients underwent neck surgery and were cured operatively. One had fixed, inoperable metastases. The NED survival rate at least two years after T therapy in patients free from metastases was 50.4%, against 25% in those with initial or distant metastases (T2 72.9% vs. 30.4%, T3 37.5% vs. 22.2%, and T4 28.6% vs. 0%). In conclusion, squamous cell carcinomas of the maxillary sinus which have extended to the oral cavity (T2) show greater lymph node propagation than those of the superoposterior portion (T3-T4). The presence or successive appearance of lymph node metastases indicates elevated malignancy of the tumor, with a very negative prognosis. N, however, is rarely the cause of death for these patients. Prophylactic lymph node excision in N0 patients is therefore not indicated.
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