ABSTRACT
Relatamos um caso de aneurisma da bifurcação da artéria carótida interna, cuja ruptura se deu para dentro de cisto de aracnóide da fissura silviana. Em revisão da literatura apenas 3 casos foram descritos. Discutimos ainda os aspectos clínicos atípicos do caso, as características dos achados cirúrgicos e uma correlação etiopatogênica entre as duas patologias.
Subject(s)
Humans , Male , Adult , Aneurysm, Ruptured/complications , Arachnoid Cysts/complications , Intracranial Aneurysm/complications , Subarachnoid Hemorrhage/etiology , Arachnoid Cysts , Arachnoid Cysts/surgery , Cerebral Angiography , Intracranial Aneurysm , Intracranial Aneurysm/surgery , Subarachnoid Hemorrhage , Tomography, X-Ray ComputedABSTRACT
Natural Killer (NK) cells play an important role in immune surveillance against tumors. The present work aimed to study the cytotoxic activity of NK cells and T cell subsets in peripheral blood of 13 patients with primary in central nervous system (CNS). As controls 29 healthy subjects with the age range equivalent to the patients were studied. The methods employed were: a) determination of cytotoxic activity of NK cells towards K562 target cells, evaluated by single cell-assay; b) enumeration of CD3+ lymphocytes and their CD4+ and CD8+ subsets defined by monoclonal antibodies; c) the identification of tumors were done by histologic and immunochemistry studies. The results indicated that adults and children with tumor in CNS display reduced percentage of total T cells, helper/inducer subset and low helper/suppressor ratio. The cutotoxic activity of NK cells was decreased in patients with CNS tumors due mainly to a decrease in the proportion of target-binding lymphocytes. These results suggest that cytotoxic activity of NK cells may be affected by the immunoregulatory disturbances observed in patients with primary tumors in CNS.
Subject(s)
Humans , Female , Middle Aged , Child , Child, Preschool , Adult , Adolescent , Central Nervous System Neoplasms/immunology , Killer Cells, Natural/immunology , T-Lymphocyte Subsets/immunology , Central Nervous System Neoplasms/blood , Cytotoxicity, Immunologic , Immunity, Cellular , T-Lymphocyte Subsets/chemistryABSTRACT
Säo poucos os estudos sobre gliomas <
Subject(s)
Humans , Male , Adult , Brain Neoplasms/surgery , Cysticercosis/surgery , Oligodendroglioma/surgery , Brain Neoplasms/diagnosis , Craniotomy , Cysticercosis/cerebrospinal fluid , Cysticercosis/diagnosis , Oligodendroglioma/diagnosis , Magnetic Resonance SpectroscopyABSTRACT
Aneurismas intracranianos de origem traumática säo pouco comuns, com cerca de 240 casos publicados na literatura mundial. Apresentamos um caso de aneurisma traumátismo, decorrente de ferimento penetrante por arma de fogo, cuja manifestaçäo clínica ocorreu 7 meses após o traumatismo, como ataque isquêmico transitório. A angiografia inicial näo demonstrou o aneurisma. Fizemos uma ampla revisäo de 212 casos publicados, analisando as principais características e relacionando com o caso apresentado