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Ectopic Thyroid Tissue With a Rare Vascular Variation / Tejido Tiroideo Ectópico con una Rara Variación Vascular
Ramesh Rao, T; Balakrishnan, R; Prakashchandra , Shetty ; Suresh, R.
  • Ramesh Rao, T; The University of the West Indies. Faculty of Medical Sciences. Department of Para clinical Sciences. Trinidad. IN
  • Balakrishnan, R; The University of the West Indies. Faculty of Medical Sciences. Department of Para clinical Sciences. Trinidad. IN
  • Prakashchandra , Shetty ; Kasturba Medical College. Department of Anatomy. IN
  • Suresh, R; The University of the West Indies. Faculty of Medical Sciences. Department of Para clinical Sciences. Trinidad. IN
Int. j. morphol ; 25(1): 121-124, Mar. 2007. ilus
Article in English | LILACS | ID: lil-626885
ABSTRACT
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.
RESUMEN
Conocer la existencia de variaciones y anomalías de algunas estructuras, sirve usualmente como guía para estudios de anatomía humana y práctica clínica. La identificación de tejido tiroideo ectópico y variaciones en origen, número y curso de ramas de la arteria tiroidea superior son, por lo general, de importancia práctica significativa para cirujanos vasculares y radiólogos. Imágenes angiográficas con tales patrones vasculares pueden llevar a confusión en su interpretación. La relación de estos vasos con otras estructuras son importantes en un diagnóstico acucioso, en técnicas invasivas y para prevenir complicaciones durante intervenciones quirúrgicas. En una disección de rutina, con el propósito de preparar piezas anatómicas de museo para la enseñanza, se observó en un cadáver de sexo masculino, tejido tiroideo mediano en un sitio diferente a la región pretraqueal. Estaba situado en el plano mediano extendiéndose desde el hueso hiodes a la parte anterior del cartflago cricoides. La glándula tiroides normal en la región pretraqueal estuvo ausente. Agregada a estainusual variación, una rara anomalía vascular fue encontrada en el mismo tejido tiroideo ectópico, sólo las arterias tiroideas superiores irrigaban este tejido tiroideo mediano. No se encontraron arterias tiroideas inferiores irrigando este tejido.


Full text: Available Index: LILACS (Americas) Type of study: Practice guideline Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2007 Type: Article Affiliation country: India Institution/Affiliation country: Kasturba Medical College/IN / The University of the West Indies/IN

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Full text: Available Index: LILACS (Americas) Type of study: Practice guideline Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2007 Type: Article Affiliation country: India Institution/Affiliation country: Kasturba Medical College/IN / The University of the West Indies/IN