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Eur Arch Otorhinolaryngol. 2019 Jan 16. doi: 10.1007/s00405-019-05282-2. [Epub ahead of print]

Contemporary treatment patterns and outcomes of salivary gland carcinoma: a National Cancer Database review.

Author information

1
Department of Otolaryngology-Head and Neck Surgery, University of Texas Health Science Center at San Antonio School of Medicine, 7703 Floyd Curl Dr, Mail Code 7777, San Antonio, TX, 78229, USA. ferrellj@uthscsa.edu.
2
Department of Otolaryngology-Head and Neck Surgery, Oregon Health and Science University, 3181 SW Sam Jackson Park Rd, Portland, OR, 97239, USA.

Abstract

PURPOSE:

Salivary gland carcinomas (SGC) are rare malignancies and data regarding treatment outcomes stratified by histologic subtype are currently limited. This study aims to examine current, national treatment patterns and overall survival (OS) of patients with the major histologic subtypes of salivary gland carcinoma.

SUBJECTS AND METHODS:

A review was performed of the National Cancer Database (NCDB) of patients with confirmed diagnoses of mucoepidermoid carcinoma, acinic cell carcinoma, adenoid cystic carcinoma, adenocarcinoma, or carcinoma ex pleomorphic receiving curative treatment between 2004 and 2014. Univariate and multivariate regression modeling were performed to identify risk factors significantly associated with overall survival (OS). Adjusted survival analyses stratified by treatment and staging were performed with the primary outcome of overall survival (OS) and were further stratified based on histologic subtype.

RESULTS:

The final analysis included 7342 patients [3547 men (48.3%) and 3795 women (51.7%); mean age 58.3 years (range 18-90 years)]. Mucoepidermoid carcinoma was the most common histology encountered [n = 2669 (36.4%)]. Unadjusted and adjusted analysis demonstrated improved survival with surgery and radiation therapy (RT) for adenoid cystic (HR = 0.69; p = 0.029), adenocarcinoma (HR = 0.61; p < 0.001), high-grade mucoepidermoid carcinoma (HR = 0.70; p = 0.026), and carcinoma ex pleomorphic (HR = 0.64; p = 0.028), while surgery with chemoradiation therapy (CRT) was associated with worse OS regardless of histologic subtype. The impact of advanced stage on survival varied amongst the histologic subtypes but portended the worst prognosis for patients with adenocarcinoma and carcinoma ex pleomorphic.

CONCLUSIONS:

The results of this NCDB review demonstrate unique treatment patterns and survival outcomes for SGC based on major histologic subtype.

KEYWORDS:

Cancer of salivary gland; Head and neck cancer; National Cancer Database; Salivary gland; Treatment outcomes

PMID:
30649610
DOI:
10.1007/s00405-019-05282-2

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