Tumores mistos e carcinomas metaplásicos de glândulas mamárias caninas: aspectos comparativos com tumores de glândulas salivares da espécie humana

Abstract

Despite several works in the literature with regard to pleomorphic adenomas (PA) and their malign counterpart, salivary gland's carcinoma ex pleomorphic adenomas (Ca ex-PA), most of them are represented by case reports, given how rare malign tumors are, their histomorphological peculiarities and controversies on histogenesis, malign transformation and metastasis mechanisms. The present work has the purpose of gathering the most important pieces of information about lesions, in a systematic and concise way to make it easy to understand these intriguing neoplasias.