Oncocytic Tumors (Oncocytomas) of Minor Salivary Glands

Nasal Oncocytoma in a Domestic Shorthair Cat

“…It has been suggested that oncocytomas that occur in salivary glands may originate from seromucous glands, and, hence, nasal oncocytomas may arise from similar glands present in the nasal cavity or minor salivary glands adjacent to the nasal cavity. 6,11 The diagnosis of oncocytoma solely by light microscopy is normally not sufficient, with these neoplasms having several morphologic similarities with the granular cell tumor.…”

A systematic review of sinonasal oncocytomas and oncocytic carcinomas: Diagnosis, management, and technical considerations

“…Of these, 3 initially presented as oncocytomas that recurred as oncocytic carcinomas . Within this group, transformation occurred, on average, 7.3 years from the initial diagnosis of oncocytoma to histologically proven oncocytic carcinoma . The case described in this study was not included in the recurrence analysis, given the limited follow‐up time compared with published case reports.…”

“…There were 9 cases of oncocytomas, including the current case, and 12 cases of oncocytic carcinomas (Table ). Three of the 12 cases of oncocytic carcinomas were initially described as oncocytomas and recurred as oncocytic carcinomas . Of the total 21 cases, there was a male predominance (3:2, 60%) with an average age of 61.3 ± 15.8 years at diagnosis (range, 23–84 years).…”

“…Eleven of the 20 case reports of sinonasal oncocytomas and oncocytic carcinomas exhibited recurrence (n = 11). Of these, 3 initially presented as oncocytomas that recurred as oncocytic carcinomas . Within this group, transformation occurred, on average, 7.3 years from the initial diagnosis of oncocytoma to histologically proven oncocytic carcinoma .…”

Ätiopathogenese und Histopathologie der Speicheldrüsenerkrankungen

“…Die Gröûe der Tumoren liegt bei 1 ± 1,5 cm und sie befinden sich in den kleinen Speicheldrüsen der Unterlippe [122,182], oder der Wangenschleimhaut [162,390] Die multizystischen kapselbegrenzten Tumoren enthalten papilläre Projektionen, die von flachen oder zylindrischen Gangepithelien überkleidet werden. Es finden sich auch onkozytär differenzierte Zellen [81] oder Becherzellen [207]. Es betehen vereinzelt auch Melaninpigmentablagerungen [17].…”