3 research outputs found
Signo de  rueda de carreta en los n贸dulos tiro铆deos: 驴Sin贸nimo de benignidad? The  spoke wheel sign in thyroid nodules: synonym of benignity?
La patolog铆a nodular tiroidea es altamente prevalente. La mayor铆a de los n贸dulos son asintom谩ticos y solo identificados en im谩genes. Hemos establecido la relaci贸n entre una morfolog铆a especial del n贸dulo en  rueda de carreta e histolog铆a benigna. Se realiz贸 una revisi贸n de la base de datos de n贸dulos puncionados bajo US y estudiados histol贸gicamente entre 2003 y 2011. Criterios de selecci贸n: n贸dulos mixtos/s贸lidos, redondos/ovales, rodeados por un halo, presentando estructuras convergentes hacia un punto central con o sin calcificaciones y vasos perif茅ricos con otros orientados hacia el centro del n贸dulo. De 3.204 n贸dulos puncionados 79 (2,5%) presentaron el signo. Tama帽o promedio: 28,3 mm. Cincuenta y ocho resultaron n贸dulos coloideos benignos en PAAF. El resto fueron informados como lesiones foliculares (4 operados benignos, 7 en seguimiento y estables, 10 sin informaci贸n). Este signo es poco frecuente, pero puede ser un elemento m谩s que colabore en la discriminaci贸n ecogr谩fica de benignidad/malignidad, especialmente en n贸dulos tiroideos de gran tama帽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