[Peculiarities of blood supply of palatal tonsils and the potential risk of hemorrhage during tonsillectomy: the literature review and case report].

The present review encompasses the publications concerning peculiarities of blood supply of palatal tonsils, the frequency and variants of the anomalous structure of internal carotid artery. Analysis of the literature data has shown that the anomalous vascular structure is one of the important risk factors of the development of intra- and postoperative hemorrhage, besides redundant blood supply of the oropharynx, inflammatory changes in the tissue of tonsils and peritonsillar region. Special attention is given to the peculiarities of diagnostics of such conditions. The emphasis is laid on the importance of timely diagnostics of the anomalous structural changes in the main vessels of the neck prior to the surgical intervention on the pharynx. The analysis of the anomalous structure of internal carotid artery is presented.