Supratentorial convexity schwannoma unrelated to cranial nerves: Case report and review of the literature
| Autor: | Daisuke Wajima, Shuta Aketa, Taiji Yonezawa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Case Report Review Schwannoma Meningioma 03 medical and health sciences 0302 clinical medicine medicine otorhinolaryngologic diseases Unrelated cranial nerve origin Embolization Cerebral Convexity Pia mater business.industry Cranial nerves medicine.disease nervous system diseases Contrast medium medicine.anatomical_structure 030220 oncology & carcinogenesis Surgery Neurology (clinical) Radiology Convexity schwannoma Subarachnoid space business 030217 neurology & neurosurgery |
| Zdroj: | Surgical Neurology International |
| ISSN: | 2152-7806 2229-5097 |
| Popis: | Background: Intracranial schwannoma not related to cranial nerves is rare entity, and difficult to be diagnosed preoperatively. Here, we experienced a case of convexity schwannoma mimicking convexity meningioma, and discuss about the characteristics of such cases based on the past published reports. Case Description: A 48-year-old man presented with a sudden onset of seizures. Brain magnetic resonance image (MRI) revealed a small mass lesion in the peripheral aspect of the right parieto-frontal lobe. The mass was isointense on T1-weighted and hyperintense on T2-weighted MRI, with homogenous enhancement after contrast medium administration. After the feeder embolization on the previous day, removal of the tumor was performed. The tumor revealed a well-demarcated, firm, spherical tumor beyond, and beneath the dura and was relatively easy to be separated from the brain. Histologically, the tumor was observed to be in subarachnoid space extending to outer space of dura-mater, intimately attached to the pia mater. The histological diagnosis was schwannoma. Conclusion: In our case, MRI findings are similar to convexity meningioma; however, the pathological diagnosis was schwannoma. Cerebral convexity is an extremely rare location for schwannoma. We emphasize that schwannoma, not related to cranial nerves, may arise in the subdural convexity space. |
| Databáze: | OpenAIRE |
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