Resumen Se define el cáncer colorrectal de aparición temprana como aquel que se diagnostica en personas menores 50 años. A diferencia del inicio tardío, cuya incidencia ha mantenido estable o disminuido, su ido aumento a nivel mundial las últimas décadas, siendo la causa desconocida y probablemente multifactorial. Este artículo pretende revisar información disponible acerca epide...

friedreich’s ataxia (frda) is a rare autosomal recessive spinocerebellar ataxia which in the majority of cases is associated with a gaa-trinucleotide repeat expansion in the first intron of frataxin gene located on chromosome 9. the clinical features include progressive gait and limb ataxia, cerebellar dysarthria, neuropathy, optic atrophy, and loss of vibration and proprioception. ataxia with ...

radiation induced sarcoma is a rare but recognized complication of radiotherapy and is associated with poor prognosis, frequently occurs 5 years after completion of treatment. we report radiation-induced sarcoma in a 42 years old male, involving the left parietooccipital scalp region following treatment of brain tumor with craniotomy and post-operative radiation with 60co machine. diagnosis of ...