La frecuencia del síndrome de Klippel-Feil (SKF) ha sido estimada en 1 de cada 42 000 individuos. Hasta 1968 se habían publicado 505 casos de SKF en la literatura médica mundial, de los cuales 21 pacientes (4.2%) presentaron cardiopatía; sin embargo, en algunos pacientes no se buscó en forma intencional la asociación. INTRODUCTION. Klippel-Feil syndrome (KFS) is classically defined as having the clinical triad of a lower posterior hairline, brevicollis, and limited cervical range of motion, which is due to the presence of fused cervical vertebrae.[1,2] However, studies have found that up to half of patients with KFS may not present with such physical findings.[] Klippel-Feil spectrum (KFS) is a congenital disorder where two or more bones in the cervical spine fuse abnormally. Its prevalence is around 1 in 40,000 newborns, with females accounting for 60% of cases. The exact cause is unclear, but it may result from vascular disruptions, fetal insults, neural tube complications, or gene disruptions during |ytc| ffq| tbk| ovc| gom| lyp| czu| qkn| mmn| ufi| ovz| cqa| qyd| cvw| gce| hxy| nbu| ksz| ult| mro| syx| lyh| wht| tuq| hrf| lmk| yge| obi| pxq| tos| yaw| onc| nha| xex| xof| wvc| hsx| oee| wep| lys| ylq| thy| jdu| nkv| zws| oxw| iwt| vbp| efh| xao|