ABSTRACT-The authors report the case of a 50 year-old hypertensive male patient with a pontine hematoma. The clinical presentation was characterized by pure pyramidal deficit signs (no other signs or symptoms were present). A pure hemiplegia syndrome, although common in supratentorial lesions, is considered to be a rare event in pontine vascular lesions. The pathophysiologic mechanisms of these neurological findings are unclear. The exclusive involvement of the pyramidal tract in this case is likely due to a variation in the vascular anatomy of the pons but, in some cases, a vascular malformation may be the cause.KEY WORDS: pontine hemorrhage, pyramidal syndrome, pure hemiplegia. Hematoma do tegmento pontino: relato de caso com hemiplegia puraRESUMO-Os autores relatam o caso um paciente de sexo masculino de 50 anos de idade com hipertensão arterial sistêmica que apresentava um hematoma pontino. A única manifestação clínica era caracterizada por síndrome piramidal pura sem outros sinais ou sintomas neurológicos. A ausência de acometimento de outras estruturas do tronco cerebral neste caso decorre possivelmente de variação da anatomia vascular do segmento pontino do tronco cerebral e constitui evento pouco comum em hematomas dessa região.
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