RESUMEN
Histologic patterns of cellular architecture often suggest a tissue diagnosis. Distinctive histologic patterns seen within the peripheral nerve sheath tumor schwannoma include the Antoni A and Antoni B regions. The purpose of this report is to review the significance of Antoni regions in the context of schwannomas.
Asunto(s)
Aumento de la Imagen/métodos , Neoplasias de la Vaina del Nervio/patología , Neurilemoma/patología , Neoplasias del Sistema Nervioso Periférico/patología , Diagnóstico Diferencial , Humanos , Guías de Práctica Clínica como Asunto , Pautas de la Práctica en MedicinaRESUMEN
Histologic patterns of cellular architecture often suggest a tissue diagnosis. One distinctive histologic pattern seen within some tumors of the nervous system is the palisade. The purpose of this report is to review the significance of palisades and pseudopalisades in the context of such tumors as schwannomas and glioblastomas.
Asunto(s)
Glioblastoma/patología , Neurilemoma/patología , Humanos , Comunicación Interdisciplinaria , Neurología , Patología , RadiologíaRESUMEN
The authors report a case of xanthine stones in a 12-year-old child with Lesh Nyhan syndrome treated by allopurinol at the dose of 10 mg/kg/24 hours. This type of urinary stone is unusual and its structure was confirmed by spectrophotometric analysis. This type of stone, in the context of Lesh Nyhan syndrome, suggests the presence of allopurinol treatment. Discontinuation of this treatment prevents recurrence of xanthine stones.