[Spontaneous thrombosis of a giant aneurysm after excision of an associated vascular malformation. Report of a case]. / Trombose espontánea de aneurisma gigante após extirpação de malformação vascular associada. Relato de um caso.

A case of a patient with a giant aneurysm of the left middle cerebral artery and a huge arteriovenous malformation hemodynamically related is reported. Complete thrombosis of the aneurysm was observed after extirpation of the arteriovenous malformation as shown by angiography one week, six months and a year post-operatively. Reduction of the regional cerebral blood flow after extirpation of the arteriovenous malformation and the natural tendency of these giant aneurysms to partially thrombose were to be the explanation for our results.

Trombose espontenea de aneurisma gigante apos extirpacao de malformacao vascular associada. Relato de um caso / Spontaneous thrombosis of a giant aneurysm after extirpation of associated vascular malformation

E registrado o caso de um paciente que apresentava um anenurisma gigante da arteria cerebral media esquerda, e volumosa malformacao vascular hemodinamicamente relacionada. Apos extirpacao da malformacao vascular, houve desaparecimento espontaneo do aneurisma, conforme demonstrado em angiografias repetidas uma semana, seis meses e um ano apos cirurgia. Atribuimos o fato a reducao do fluxo sanguineo regional cerebral, apos a extirpacao da malformacao vascular, e a tendencia natural desses aneurismas gigantes se trombosarem parcialmente

[Lipoma of the corpus callosum. Report of a case associated with callosum agenesia]. / Lipoma do corpo caloso. Registro de um caso associado com agenesia calosa.

A case of callosal lipoma with radiologic, angiographic and CT comprovation is discussed under actual knowledge of metabolic and clinical aspect of lipomas. The authors also make considerations about surroundings and genetic factors which would play a role acting especifically with chemical biotrophism on developing cells, affecting the genesis of corpus callosum and altering the functional structure of cells affected.

Lipoma do corpo caloso: registro de um caso associado com agenesia calosa. / Lipoma of corpus callosum: report of a case associated with callosum agemesia

Registro de um caso de lipoma caloso com comprovacao radiologica, angiografica cerebral e pela tomografia computorizada. Os achados sao discutidos bem como as recentes aquisicoes sobre os aspectos metabolicos dos lipomas. Os autores julgam ser valido especular sobre fator ou fatores ambientais ou ate geneticos mutacionais, atuando com biotropismo quimico especifico sobre as celulas em desenvolvimento afetando a formacao do corpo caloso e alterando a estrutura funcional das celulas afetadas

[Progressive occlusive disease of the cerebral arteries associated with Down's syndrome: considerations on the etiopathogenesis]. / Doença oclusiva progressiva das arterias cerebrais associada a síndrome de Down: considerações sobre a etiopatogenia.

The case of a 5 years old child with association of "moyamoya" and Down syndrome with permeability of internal carotid, of medial and anterior cerebral arteries is reported. The authors postulate the possibility of a microcirculatory disorder in view of the distal lesion including the action of any distribution of the alterations.

Doenca oclusiva progressiva das arterias cerebrais associada a sindrome de Down: consideracoes sobre a etiopatogenia. / Progressive occlusive of cerebral arteries associated with Down's syndrome: considerations on the ethiopathogenesis

Registro de um caso que pode ser o segundo na literatura mundial de associacao de moyamoya com sindrome de Down, caracterizando-se pela permeabilidade das arterias carotidas internas, cerebrais medias e anteriores. O comprometimento da circulacao distal poderia levantar a possibilidade de uma alteracao da microcirculacao capilar e, inclusive, da acao de alguma substancia nao determinada, fatores que poderiam explicar a localizacao e bilateralidade das lesoes

[Progressive occlusive disease of cerebral arteries associated with Down's syndrome. Report of a case]. / Doença oclusiva progessiva das artérias cerebrais associada a síndrome de Down. Registro de um caso.

The case of a 5 years old child with association of "moyamoya" and Down syndrome with permeability of internal carotid, of medial and anterior cerebral arteries is reported. The authors postulate the possibility of a microcirculatory disorder in view of the distal lesion including the action of any unknown substance which constrictive action could explain the bilaterality and distribution of the alterations.