A case of porencephalic cyst in a schizophrenic patient with history of postnatal encephalitis.

摘要

Porencephaly, which is an extremely rare congenital abnormality of the central nervous system, is a fluid-filled cavitation in the brain that may communicate with the intracerebral cerebrospinal fluid spaces. Two types are described (Verity et al., 2003): type 1 or encephaloclastic porencephaly and type 2 or schizencephalic porencephaly. Most cases result from a vascular lesion, either hemor-rhagic or thrombosis (Douzenis et al, 2010). In rare cases, congenital cysts on the left temporal and frontal lobes associated with psychosis have been described (Alexander et al., 1997; Arora et al., 2009; Douzenis et al., 2010; Pae and Kim, 2009; Relan et al., 2002). However, it remains unclear if there is an etiologic relationship between porencephaly and psychosis. We report here an original case of schizophrenic patient with history of severe postnatal encephalitis at age of 6 months and who presents a large porencephalic cyst.