Mosaic trisomy 13 occurs when there is a percentage of trisomic cells for an entire chromosome 13, while the remaining percentage of cells is euploid. The prevalence of this syndrome ranges from 1 in 10 000 to 1 in 20 000 births. Complete, partial or mosaic forms of this disorder can occur. The phenotype of mosaic trisomy 13 patients varies widely. Patients with mosaic trisomy 13 usually have a longer survival and a less severe phenotype compared to patients with complete trisomy 13. Genetic counselling is difficult due to the wide variation among the clinical manifestations of these patients. There have been 49 cases of mosaic trisomy 13 reported in the literature. We report the case of a patient with mosaic trisomy 13, a sacral appendage and a cleft lip and palate. Copyright 2013 BMJ Publishing Group. All rights reserved

IntroductionAtlantoaxial rotatory subluxation is rarely caused by trauma in adults. Usually, the treatment of choice is traction using Halo/Gardner-Wells fixation devices for up to six weeks.Case presentationWe present the case of a 19-year-old Caucasian woman with traumatic atlantoaxial subluxation. Early reduction three hours after trauma and immobilization using only a soft collar were performed and yielded very good clinical results.ConclusionIn the adult population, atlantoaxial subluxation is a rare condition but is severe if untreated. Early treatment implies a non-surgical approach and a good outcome. Conservative treatment is the recommended first step for this condition.

RESUMENLa enfermedad de Huntington es una enfermedad neurodegenerativa que se manifiesta con alteraciones motoras descritas típicamente como movimientos coreiformes, cambios en el estado de ánimo y pérdida de funciones cognitivas. El patrón de herencia de esta enfermedad es autosómico dominante. La alteración genética comprende una expansión inestable del triplete citosina, adenina, guanina en el gen que codifica la proteína huntingtina. La prueba molecular confirma el diagnóstico. El consejo genético debe ser prudente debido al alto riesgo de suicidio. Se presenta el caso de un joven de 14 años con una pobre red de apoyo y un cuadro clínico grave de esta enfermedad en el contexto de un patrón de herencia poco claro.

Arch Argent Pediatr 2012;110(5):e95-e98 / e95Presentación de casos clínicos RESUMEN El síndrome ectrodactilia, displasia ectodérmica y fisura de labio/paladar es una entidad poco frecuente, asociada a la mutación de genes que codifican la proteína p63. Presentamos un caso de un paciente con ectrodactilia en el pie derecho asociada a labio y paladar fisurados, sin otras alteraciones evidentes, con antecedente familiar de labio con paladar fisurado y muerte en el período perinatal. El manejo de cada caso de este síndrome debe ser específico y multidisciplinario. Palabras clave: síndrome eec, ectrodactilia, fisura de labio y paladar, displasia ectodérmica, diagnóstico prenatal, asesoramiento genético. SUMMARYThe ectrodactyly-ectodermal dysplasia-cleft lip/palate syndrome is a rare entity associated with mutations in the genes that express the protein p63. We present a case of a patient with right foot ectrodactyly associated with cleft lip and palate, without other evident anomalies. The patient has a positive familiar history for cleft lift and palate and mortality during the perinatal period. The management of each case must be specific and multidisciplinary.