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  • Title: [A case of intracerebral tuberculoma: clinical characteristics and MRI findings].
    Author: Sakakibara Y, Taguchi Y, Sekino H, Tsukamoto H, Ozawa T, Tadokoro M.
    Journal: No Shinkei Geka; 1994 Feb; 22(2):161-4. PubMed ID: 8115012.
    Abstract:
    A case of intracerebral tuberculoma treated surgically was reported. A 47-year-old man was admitted to our hospital because of progressive left hemiaparesis over the previous 5 months. A computerized tomography scan showed a well enhanced mass associated with a marked perifocal edema. T1 weighted magnetic resonance imaging (MRI) revealed an isosignal ring around the heterogenous low intensity mass. A low intensity area just interior to this ring was also visualized both in T1 and T2 weighted images. Although the clinical course was unusually long, this was diagnosed as a metastatic brain tumor. He underwent a right frontal craniotomy and a well circumscribed, yellowish, firm mass was totally extirpated. Pathohistologically, this mass was considered to be a tuberculoma though the tuberculous bacilli could not be identified in Ziehl-Neelsen staining. His hemiplegia improved much and his ambulation was restored. Since tuberclomas are quite rare in developed countries, the diagnosis of intracerebral tuberculomas would be extremely difficult unless tuberculosis was verified in some other organs. The auxiliary examinations even by using MRI have often given little information which would assist diagnosis. However, based on pathological findings, the ring appearance and low intensity area medial to the ring in the outer part of the tuberculoma shown in MRI of our patient seemed to represent a chronic granulomatous inflammation and gave a clue to rule out the suspicion of metastatic brain tumors. To make a correct diagnosis of intracerebral tuberculomas, multidisciplinary consideration is mandatory.
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