[Clinical analysis of 35 cases of adult rhabdomyosarcoma of nasal cavity and sinuses]

Objective:To investigate the clinical characteristics and prognostic factors of adult rhabdomyosarcoma（RMS） of nasal cavity and sinus. Method:There were 35 adult patients with RMS, including 22 with embryonal type and 13 with acinar type. Surgery + chemoradiotherapy（17 cases）, surgery + radiotherapy（6 cases）, surgery + chemotherapy（7 cases）（4 cases of seed implantation after surgery and chemotherapy）; Five patients were treated with antitumor drugs instead of surgery. Result:The study follow-up 9-62 months, adult nasal sinuses RMS total 5 years survival rate was 2.9%, among them the IRS stage>Ⅱ period, the infiltration of the skull base tumor, local lymph node metastasis, tumor diameter of 5 cm or more, 50% or higher Ki-67 are poor prognosis factor. Conclusion:RMS in nasal cavity and sinus are mostly embryonal type in adults, and the 5-year overall survival rate is low, which is related to larger primary tumor volume, local lymph node metastasis, skull base infiltration and higher ki-67 ratio at the first diagnosis in adults.

[Clinical analysis of 31 patients with sinonasal neuroendocrine carcinoma]

Objective:To investigate the characteristics and prognostic factors of sinonasal neuroendocrine carcinoma （SNEC）. Methods:The clinical data of 31 patients with SNEC were retrospectively analyzed. Among the 31 patients, 3 cases were simply surgically removed, 4 cases were surgery + radiotherapy, 4 cases were surgery + chemotherapy, 10 cases were surgery + chemoradiotherapy, and 10 cases were simply given chemoradiotherapy without surgery. The study follow-up 8-64 months. Results:By the end of follow-up, 2 patients were lost to follow-up, 17 died, 12 survival, 8 relapsed and 5-year survival rate was 36.4％. High TNM stage, lymph node metastasis, skull base infiltration and Ki-67≥55％ were the negative prognostic factors for survival. Conclusion:SNEC is a rare aggressive tumor, with poor prognosis, high local recurrence rate, metastasis tendency, hidden disease. The comprehensive treatment of surgery combined with chemoradiotherapy is still the best treatment.