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Neil Bhattacharyya, MD

Arch Otolaryngol Head Neck Surg. 2003;129:334-337.

Objective  To characterize the clinical behavior of non–squamous cell cancer of the maxillary sinus.

Methods  Cases of non–squamous cell maxillary sinus malignancy during 1988 through 1998 were extracted from the Surveillance, Epidemiology, and End Results database. Data for histologic type of tumor, tumor stage, and survival were analyzed using the Kaplan-Meier method to determine mean, median, and 5-year survival statistics for the overall cohort and for individual histologic types of tumor. The effect of tumor stage on overall survival was assessed. To determine relative survival, the non–squamous cell group was compared with a second group of patients with squamous cell carcinoma, matched according to age at diagnosis, year of diagnosis, and T stage.

Results  One hundred eighty-eight cases of non–squamous cell malignancy were identified. The mean patient age was 57.8 years, and 143 patients (76%) presented with T3 or T4 tumors. There were 31 adenocarcinomas, 64 adenoid cystic carcinomas, 15 mucoepidermoid carcinomas, 22 melanomas, 45 sarcomas, and 11 undifferentiated carcinomas. The overall mean survival was 63.4 months, and 5-year survival was 45.6%. Adenoid cystic carcinoma exhibited the best mean survival (79 months), whereas melanoma and undifferentiated carcinoma exhibited poor mean survivals (30.3 and 12.8 months, respectively). T stage did not statistically affect overall survival (P = .86). Survival for patients with non–squamous cell cancer was substantially better than survival for the matched group with squamous cell carcinomas (mean survival, 41.5 months; 5-year survival, 27.4%).

Conclusions  Patients with non–squamous cell carcinoma of the maxillary sinus typically present with advanced T stage but have significantly better survival than patients with similar-stage squamous cell carcinoma of the maxillary sinus. T stage has less effect than histologic type of tumor on prognosis in non–squamous cell carcinoma of the maxillary sinus.

From the Division of Otolaryngology, Department of Otology and Laryngology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass.

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