Histopathologic patterns of salivary gland lesions and associated factors in Jimma university medical center, Jimma, South West Ethiopia

Abstract

Abstract Background: Tumors of salivary gland are morphologically and clinically diverse group of neoplasms, which may present considerable diagnostic and management of challenges to the pathologist or surgeons.It account’s about 4% of all epithelial neoplasms in head and neck region. These comprise a wide variety of benign and malignant neoplasms, and non-neoplastic lesions which exhibit a difference in biological behaviors. Therefor it is important to study the morphological patterns of salivary gland neoplastic and non-neoplastic lesions. Methods and Materials: A retrospective cross-sectional study design was applied for Salivary gland lesions patients diagnosed at Jimma university medical center from September 2016 to August 2020. Results: from the total of 176 patients 135(76.7%) were neoplastic and the remaining 41(23.3%) were non-neoplastic lesions. Being in the age group of 21-40[odds ratio=5.172, 41-60[odds ratio =4.534], and having the lesions for duration >24 months [odds ratio 12.479] and the size of the mass >5 cm [odds ratio =19.486]were associated increased odds of neoplastic lesions, while the site of the lesions being in major groups of salivary glands [odds ratio=0.056] was associated with decreased likelihood of neoplastic Salivary gland lesions. Conclusion: The prevalence of neoplastic salivary lesions was three times more common than non-neoplastic ones and malignancies were slightly more common than benign lesions. Mucoepidermoid carcinoma was the commonest malignant while Pleomorphic adenoma was the commonest benign Salivary gland lesions both in females and males. The neoplastic Salivary gland lesions were highly associated with age, duration, tumor size and minor groups of salivary glands.