良性上皮性唾液腺腫瘍：ルーマニアにおける単一施設の後ろ向き病理組織学的および臨床人口統計学的研究

Background: Epidemiological studies on benign epithelial salivary gland tumors are challenging due to their rarity, pathological heterogeneity, variable tumor locations, and the limited national data collection in Romania. Our study aimed at the evaluation of benign epithelial salivary gland tumors collected over fifteen years in a tertiary center, in order to characterize their demographic and histopathological profiles and to contribute to their diagnostic and therapeutic strategies. Materials and Methods: A retrospective analysis of 404 cases of benign epithelial salivary gland tumors diagnosed in "Sf. Spiridon" County Hospital, Iasi, from 2010 to 2024, has been performed. Results: The analyzed cases showed a slight female predominance (52.97%) and a mean patient age of 54.55 ± 14.207 years. Tumor frequency increased progressively with age, peaking in the sixth and seventh decades of life. The most common histological types were pleomorphic adenoma (62.62%) and Warthin tumor (29.95%), both types showing a predominant parotid gland involvement (88.51%). The recurrences were rare, being registered only in 1.58% of pleomorphic adenomas. A significant association between tumor histological type and both gender (p < 0.001) and age group (p < 0.001) was registered, while no significant correlation between gender and age group (p = 0.288) or between tumor location and gender or age group (p = 0.382; p = 0.383) was found. Conclusions: The frequency of pleomorphic adenoma is increasing, showing an age-related distribution and parotid gland propensity. Key morphological features in each histological type support a better preoperative stratification, a more confident margin assessment, and an individualized extent of excision with function preservation.