OBJECTIVE AND IMPORTANCE: Chronic encapsulated @entity1779 is a fairly rare clinical entity. This unique lesion is peculiar for its clinical onset, formation of a capsule, and progressive enlargement. The mechanism for capsule formation and self-perpetuating expansion still remains uncertain, as well as the causal relationship with @entity1462 . Because of their pseudotumoral course and misleading neuroradiological features, these lesions can be misdiagnosed preoperatively as @entity1313 . CLINICAL PRESENTATIONS: A 62-year-old @entity1 was referred with a 2-month history of generalized @entity410 . There was no history of @entity542 or arterial @entity101 . The results of a neurological examination were normal. Computed tomographic scans revealed a slightly hyperdense roundish area in the right parietotemporal region with ring-like enhancement after contrast medium injection, moderate mass effect, and perifocal low attenuation. With the provisional diagnosis of @entity816 , the @entity1 was admitted for a craniotomy. Before surgery, a thallium-201 single photon emission computed tomographic study was performed, which showed no abnormal uptake of the tracer, raising significant doubt regarding the presumptive diagnosis of a @entity5 . INTERVENTION: Intraoperative findings revealed a @entity1410 , with a well-demarcated, thick, fibrous-elastic capsule. There was evidence of repeated intracapsular @entity548 . The lesion was totally removed, and the @entity1 recovered fully. No other pathological findings, including @entity1462 , were noted. CONCLUSION: Chronic encapsulated intracerebral @entity1410 probably occur more frequently than the limited number of reported cases would indicate. This case represents a realistic clinical problem-solving setting in with @entity4214 -201 single photon emission computed tomography was used because of its capacity for functional @entity5 detection and differential diagnosis.

Chronic encapsulated XXXX : contribution of thallium-201 single photon emission computed tomography in preoperative diagnosis: case report.

@entity1 :: ('9606', 'Species') :: ['patient', 'man'] @entity410 :: ('MESH:D012640', 'Disease') :: ['tonicoclonic seizures'] @entity101 :: ('MESH:D006973', 'Disease') :: ['hypertension'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhages'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['cerebral neoplasms'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity542 :: ('MESH:D006259', 'Disease') :: ['head injury'] @entity4214 :: ('MESH:D013793', 'Chemical') :: ['thallium'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['hematomas', 'hematoma'] @entity816 :: ('MESH:D001254', 'Disease') :: ['astrocytoma'] @entity1779 :: ('MESH:D002543', 'Disease') :: ['intracerebral hematoma'] @entity1462 :: ('MESH:D054079', 'Disease') :: ['vascular malformations']
@entity1779 :: (MESH:D002543,Disease) :: ['intracerebral hematoma']
