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World Neurosurg ; 126: e259-e269, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30797927


BACKGROUND: Intraneural ganglion cysts of the obturator nerve are rare. Our aim is to review cases of obturator intraneural ganglion cysts at our institution and those reported in the literature. METHODS: We reviewed all cases evaluated by the senior author. A literature search was performed using the PubMed database and Google Scholar with the following terms: "obturator cyst," "obturator intraneural ganglion cyst," and "obturator intraneural ganglia." All cases underwent a retrospective review. Patient demographic data, including age, sex, and presenting signs and symptoms were recorded. Imaging studies were re-evaluated by 2 musculoskeletal radiologists experienced in the diagnosis of intraneural ganglion cysts. RESULTS: We identified 2 cases of obturator intraneural ganglia at our institution; both were connected to the hip joint. We found 4 cases that were clearly diagnosed as intraneural ganglia in the literature, of which only 1 was recognized by the original authors as being joint connected, but based on our reinterpretation, 3 of 4 were joint connected. An additional 9 cases identified in the literature did not definitely report the nerve-cyst relationship, but based on our reinterpretation, were believed to be intraneural; 8 were joint connected. CONCLUSIONS: We believe that obturator intraneural ganglion cysts adhere to the principles of the unifying articular theory. They arise from the anteromedial hip joint and extend into an articular branch and can reach the parent obturator nerve. Surgery should address the hip disease and/or the articular branch connection. Not appreciating the pathoanatomy of these cysts can lead to persistent or recurrent cysts.

Cistos Glanglionares/cirurgia , Adulto , Idoso , Eletromiografia , Feminino , Cistos Glanglionares/diagnóstico por imagem , Cistos Glanglionares/patologia , Articulação do Quadril/diagnóstico por imagem , Articulação do Quadril/patologia , Articulação do Quadril/cirurgia , Humanos , Imagem por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Debilidade Muscular/etiologia , Nervo Obturador/diagnóstico por imagem , Nervo Obturador/patologia , Nervo Obturador/cirurgia , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/cirurgia , Estudos Retrospectivos , Espondiloartropatias/etiologia , Adulto Jovem