Barbara Wollenberg

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3. Results A total of 354 patients were identified in the clinical database. 30 non-PA tumors were excluded because the respective histological samples were not present in the pathology department and could not be examined. Furthermore, 95 pathological samples were excluded, as they represented general parenchymatous changes due to autoimmune disorders or because they were non-glandular tumors or cysts. Of the remaining 259 patients, 99 were PA, 129 were Warthin tumors, and 31 had other tumors.

1. Introduction Salivary adenoid cystic carcinoma (SACC) is considered the second most frequent malignant salivary gland neoplasm and exhibits a controversial and poorly understood biological behavior, characterized by slow and indolent growth [1,2]. SACC typically arises from the submandibular gland and minor salivary glands, while its occurrence in the parotid gland is relatively rare [3].