title: Organizing hematoma in a child presenting as a 'doughnut lesion' on nuclear scan. Case report.
abstract: We report a 4 1/2-year-old boy who presented with a 4-week history of frontal headaches and fever, and generalized convulsion 5 months previously. Papilledema, an abnormal EEG and a brain scan with a frontal mass and 'doughnut' sign were found. The association of the clinical history with brain scan findings strongly suggested a brain abscess. At surgery the lesion proved to be an encapsulated hematoma; Histological findings suggest underlying microangiomata.
mesh_terms: D001922:Brain Abscess / Q000175:diagnosis*; D002543:Cerebral Hemorrhage / Q000175:diagnosis*; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006406:Hematoma / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000150:complications / Q000175:diagnosis*; D008297:Male; D011877:Radionuclide Imaging; D013577:Syndrome