STUDY OF VARIATION IN ORIGIN OF SUPERIOR LARYNGEAL ARTERY AND ITS CLINICAL SIGNIFICANCE

Objectives: The Superior laryngeal artery (SLA) is the dominant arterial supply of the laryngeal muscles, mucosa and glands. Normally it is a branch of Superior thyroid artery (STA). Knowledge of variation in origin of SLA is important to achieve bloodless eld of surgery during partial laryngectomy, radical neck dissection and other neck surgeries. 30 Materials and Method: formalin xed human cadavers (60 hemi necks) of both the sex from department of anatomy BGS GIMS and BMC&RI have been dissected to study the origin of SLA. In 75% cases SLA originated from STA, in 11.6% cases SLA originated from Ex Result: ternal carotid artery, in 8.3% cases SLA originated from common carotid artery and in 5% cases it originated from carotid bifurcation. Precise anatomical Conclusion: knowledge of variations in the origin of SLA is essential for minimizing complications during laryngeal surgeries, laryngeal transplantation and for selective intra- arterial chemotherapy for laryngeal cancers.