%0 Journal Article
%T Signo de  rueda de carreta en los n車dulos tiro赤deos:  Sin車nimo de benignidad? The  spoke wheel sign in thyroid nodules: synonym of benignity?
%A Eleonora Horvath
%A Felipe Gonz芍lez I
%A Claudio Silva F
%A 芍lex Castro M
%J Revista Chilena de Radiolog赤a
%D 2011
%I Publimpacto
%X La patolog赤a nodular tiroidea es altamente prevalente. La mayor赤a de los n車dulos son asintom芍ticos y solo identificados en im芍genes. Hemos establecido la relaci車n entre una morfolog赤a especial del n車dulo en  rueda de carreta e histolog赤a benigna. Se realiz車 una revisi車n de la base de datos de n車dulos puncionados bajo US y estudiados histol車gicamente entre 2003 y 2011. Criterios de selecci車n: n車dulos mixtos/s車lidos, redondos/ovales, rodeados por un halo, presentando estructuras convergentes hacia un punto central con o sin calcificaciones y vasos perif谷ricos con otros orientados hacia el centro del n車dulo. De 3.204 n車dulos puncionados 79 (2,5%) presentaron el signo. Tama o promedio: 28,3 mm. Cincuenta y ocho resultaron n車dulos coloideos benignos en PAAF. El resto fueron informados como lesiones foliculares (4 operados benignos, 7 en seguimiento y estables, 10 sin informaci車n). Este signo es poco frecuente, pero puede ser un elemento m芍s que colabore en la discriminaci車n ecogr芍fica de benignidad/malignidad, especialmente en n車dulos tiroideos de gran tama o. Thyroid nodular disease is a highly prevalent condition. Most nodules are asymptomatic and only identifiable on images. We have established a relationship between the particular  spoke wheel pattern of thyroid masses and a benign histology. A review of our institutional database of thyroid punctured under ultrasound guidance, histologically studied between 2003 and 2011, was performed. Node selection criteria included: mixed /solid, round /oval, surrounded by a halo, with radial structures converging toward a central point, with or without calcifications, and with peripheral vessels along with others oriented toward the center of the thyroid masses. Seventy-nine (2.5%) out of 3.204 punctured masses exhibited this sign. Average size: 28.3 mm. Fifty-eight masses were benign colloid nodules as diagnosed on FNA biopsy. Remaining masses corresponded to Lesion Follicular (4 benign, surgically treated; 7 under follow-up, stable; 10 with no information). Despite being a rare radiologic finding, the  spoke wheel sign may be another element contributing to ultrasonographic discrimination between benignity and malignancy, especially in large thyroid masses.
%K Benignidad
%K N車dulos tiro赤deos
%K Rueda de carreta
%K Ultrasonido
%K Benignity
%K Spoke wheel sign
%K Thyroid masses
%K Ultrasound
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-93082011000400003