Intracranial tuberculomas: a CT study.

CT appearances of 25 tuberculomas are described. The image morphology of the immature forms is small discs and rings with massive oedema. The mature forms appear as large rings or lobulated masses. The large rings enclose a mass, a little more dense than brain; the lobulated masses represent coalesced small discs and rings forming a large tuberculoma. These images are consistent and repetitive in tuberculomas. The larger masses form the surgical group and need excision; the smaller masses form the medical group and have had successful medical therapy with serial scans to document healing. The presence of multiple masses is recorded in 55% of the cases.