Sparganosis of brain and spinal cord: unusual tapeworm infestation (report of two cases).

Among the diseases due to cerebral parasitism, those caused by sparganum mansoni, the larval form of Spirometra mansoni, are very rare. We report two cases, one involving the frontoparietal area in a 38-year-old male and presenting as a mass lesion and another in a 10-year-old girl, presenting with paraparesis due to mid-thoracic compressive mass lesion. Pathological examination of the resected lesion revealed the characteristic plerocercoid larva, spargana, enclosed in acute inflammatory exudate, resembling an abscess. Postoperative recovery was good, suggesting that the best treatment for cerebral or spinal sparganosis mansoni is surgical excision. Serological tests for diagnosis were not carried out in these cases, since parasitic infection was not suspected. Although generally the role of immunodiagnosis is limited due to rarity of the condition, in endemic areas such tests may be useful in preoperative diagnosis.