Study of thyro-lingual trunk and its clinical relevance.

Every surgery is planned on the anatomical arrangement of the structures. Any variation in the arterial arrangement may lead to haemorrhagic episodes during intraoperative procedures. In this study, variations in the branching pattern of external carotid artery were noted. In two of the cases, thyrolingual trunk was observed. In the first case, thyrolingual trunk was arising from the common carotid artery, 17 mm below carotid bifurcation and in the second one at the carotid bifurcation. The knowledge of anatomical variation is necessary during intra-arterial chemotherapy and to prevent haemorrhagic accidents during intraoperative procedures.