비부비동 악성흑색종: 38명 환자의 임상 양상 및 치료 결과
Mucosal Melanoma of the Sinonasal Tract: Retrospective Analysis of 38 Patients of a Single Institution
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Background and Objectives Mucosal melanoma comprises 1.3% of all malignant melanomas and mainly occurs at the oropharynx and the sinonasal cavity in the head and neck area. Five year survival rate is about 10-46%. We aimed to investigate the clinical features and treatment outcomes of 38 patients with sinonasal malignant melanoma (SNMM). Subjects and Method A retrospective review of medical records was carried out on 38 patients who were diagnosed as SNMM between August 1995 and December 2012. Clinical features were evaluated and tumors were staged according to the TNM staging system. The Kaplan-Meier method was used to assess survival in the cohort. Results The 38 patients consisted of 18 males and 20 females, ranging in age from 36 to 91 years, with a median age of 59 years at diagnosis. Common symptoms were nasal obstruction and epistaxis, and mean symptom duration to diagnosis was 2.0 months. The main treatment modalities were surgery only (n=18) or surgery plus adjuvant radiotherapy (n=9). Distant metastases were detected in 15 patients (39.5%) at 8 months after initial therapy. Overall 5-year survival rate was 45.6%. There was no significant difference in survival rate between patients who underwent surgery only and those who had surgery with postoperative radiation (p=0.359). Conclusion Sinonasal mucosal melanoma is a highly recurrent tumor (80% recurrence rate) with poor prognosis (5-year survival rate; 46%). As radiation treatment and/or chemotherapy are not so effective for the recurrent tumor, early detection and surgical resection are mandatory at present. New treatment modality should be developed to improve the survival rate. Korean J Otorhinolaryngol-Head Neck Surg 2014;57(6):384-9
Abstract
Background and Objectives Mucosal melanoma comprises 1.3% of all malignant melanomas and mainly occurs at the oropharynx and the sinonasal cavity in the head and neck area. Five year survival rate is about 10-46%. We aimed to investigate the clinical features and treatment outcomes of 38 patients with sinonasal malignant melanoma (SNMM). Subjects and Method A retrospective review of medical records was carried out on 38 patients who were diagnosed as SNMM between August 1995 and December 2012. Clinical features were evaluated and tumors were staged according to the TNM staging system. The Kaplan-Meier method was used to assess survival in the cohort. Results The 38 patients consisted of 18 males and 20 females, ranging in age from 36 to 91 years, with a median age of 59 years at diagnosis. Common symptoms were nasal obstruction and epistaxis, and mean symptom duration to diagnosis was 2.0 months. The main treatment modalities were surgery only (n=18) or surgery plus adjuvant radiotherapy (n=9). Distant metastases were detected in 15 patients (39.5%) at 8 months after initial therapy. Overall 5-year survival rate was 45.6%. There was no significant difference in survival rate between patients who underwent surgery only and those who had surgery with postoperative radiation (p=0.359). Conclusion Sinonasal mucosal melanoma is a highly recurrent tumor (80% recurrence rate) with poor prognosis (5-year survival rate; 46%). As radiation treatment and/or chemotherapy are not so effective for the recurrent tumor, early detection and surgical resection are mandatory at present. New treatment modality should be developed to improve the survival rate. Korean J Otorhinolaryngol-Head Neck Surg 2014;57(6):384-9
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