Multifocal epithelioid glioblastoma mimicking cerebral metastasis: case report

Gasco, J.; Franklin, B.; Fuller, G. N.; Salinas, P.; Prabhu, S.
December 2009
Revista Neurocirugia;2009, Vol. 20 Issue 6, p550
Academic Journal
Objective. Epithelioid glioblastoma is a rare morphologic subtype of glioblastoma that closely mimics metastatic carcinoma or metastatic melanoma histologically. All previous case reports of this unusual glioblastoma variant have been solitary lesions. We report here the first case to our knowledge of multifocal epithelioid glioblastoma mimicking cerebral metastasis. Clinical presentation. A 67-year-old man with a prior history of mycosis fungoides, a common form of cutaneous T-cell lymphoma, presented with memory loss and impaired peripheral vision. Two discrete brain lesions highly suspicious for metastases were identified by magnetic resonance imaging (MRI). Intervention. The patient underwent two separate craniotomies; both lesions were successfully resected in toto with an excellent post-surgical outcome. Conclusion. Epithelioid glioblastoma is one of the rarest morphologic subtypes of glioblastoma. Here we describe the first case to our knowledge of multifocal epithelioid glioblastoma that convincingly mimicked a secondary metastatic process. Multifocal epithelioid glioblastoma should be included in the differential diagnosis of patients who present with multiple discrete brain lesions. An attempt at gross total resection is recommended when anatomically feasible for definitive histopathological diagnosis and to improve progression free survival of patients who present with similarly ambiguous and potentially misleading multiple lesions.


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