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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

RAMESH RAO, T; BALAKRISHNAN, R; PRAKASHCHANDRA , Shetty   and  SURESH, R. Ectopic Thyroid Tissue With a Rare Vascular Variation. Int. J. Morphol. [online]. 2007, vol.25, n.1, pp.121-124. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022007000100017.

Awareness of the variations and anomalous existence of some structures serve as useful guide for both in studies of human anatomy and in clinical practice today. Identification of ectopic thyroid tissue and variations in origin, number and course of the branches of the superior thyroid artery are of significant practical importance for the general, vascular surgeons and radiologist. Angiographic images with such vascular patterns may lead to confusion in interpretation. The relations of these vessels with the other structures are important for accurate diagnostic and invasive techniques and to prevent further complications during surgical interventions. In our routine dissections with the purpose of preparation of the teaching and museum specimens, it was observed that in one of the elderly male cadaver showed median thyroid tissue at a site other than in its usual pretracheal region. It was situated in the median plane extending from the hyoid bone to the front of cricoid cartilage. Normal thyroid gland in the pretracheal region was absent. Added to this rare anomaly a vascular anomaly was found in the same ectopic thyroid tissue. Solely the superior thyroid arteries supplied this median thyroid tissue. The inferior thyroid arteries were found to be absent on both sides supplying this median thyroid tissue

Keywords : Ectopic thyroid tissue; Vascular variation; Midline cervical mass.

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