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Cisterna magna meningiomas without dural attachment: Report of two cases
Affiliations- Department of Neurosurgery, Kobe University Graduate School of Medicine, Kobe, Japan
- Department of Pathology, Kobe University Hospital, Kobe, Japan
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Abstract
Meningiomas within the cisterna magna without dural attachment are extremely rare. To the best of our knowledge, only three cases of meningiomas within the cisterna magna have been reported in the literature. The authors present two cases of patient with the cisterna magna meningioma without dural attachment. (Case 1) A 36-year-old female presented with a 10-month history of numbness in the left hand. Magnetic resonance imaging (MRI) disclosed the presence of a contrast-enhanced tumor in the posterior fossa. A suboccipital craniectomy was performed, and the tumor located within the cisterna magna with no attachment to the dura. Diagnosis is made as clear cell meningioma. The postoperative course was uneventful, and a recurrence has not been observed for three years. (Case 2) A 58-year-old man presented with a well-circumscribed mass in the posterior fossa. At surgery, the tumor located within the cisterna magna with a connection to the right tenia. The tumor was totally removed without neurological deficits. At a 7-year follow-up, no evidence of a recurrence was observed. It is quite difficult to preoperatively diagnose as a cisterna magna meningioma without dural attachment. However, complete removal of the tumor should be achieved.
Abstract
Meningiomas within the cisterna magna without dural attachment are extremely rare. To the best of our knowledge, only three cases of meningiomas within the cisterna magna have been reported in the literature. The authors present two cases of patient with the cisterna magna meningioma without dural attachment. (Case 1) A 36-year-old female presented with a 10-month history of numbness in the left hand. Magnetic resonance imaging (MRI) disclosed the presence of a contrast-enhanced tumor in the posterior fossa. A suboccipital craniectomy was performed, and the tumor located within the cisterna magna with no attachment to the dura. Diagnosis is made as clear cell meningioma. The postoperative course was uneventful, and a recurrence has not been observed for three years. (Case 2) A 58-year-old man presented with a well-circumscribed mass in the posterior fossa. At surgery, the tumor located within the cisterna magna with a connection to the right tenia. The tumor was totally removed without neurological deficits. At a 7-year follow-up, no evidence of a recurrence was observed. It is quite difficult to preoperatively diagnose as a cisterna magna meningioma without dural attachment. However, complete removal of the tumor should be achieved.
Keywords
Meningioma, Cisterna magna, Dural attachment
About this articleTitle
Cisterna magna meningiomas without dural attachment: Report of two cases
Journal
Neurologia i Neurochirurgia Polska
Issue
Pages
247-251
Page views
214
Article views/downloads
757
DOI
10.1016/j.pjnns.2017.02.003
Bibliographic record
Neurol Neurochir Pol 2017;51(3):247-251.
Keywords
Meningioma
Cisterna magna
Dural attachment
Authors
Masaaki Kohta
Takashi Sasayama
Tomoaki Nakai
Masaaki Taniguchi
Hiroaki Nagashima
Kazuhiro Tanaka
Katsu Mizukawa
Tomoo Itoh
Eiji Kohmura
