World Neurosurg
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Review Case Reports
Usefulness of embolization for iatrogenic dural arteriovenous fistula associated with recurrent chronic subdural hematoma: A case report and literature review.
Refractory chronic subdural hematomas due to iatrogenic dural arteriovenous fistulas (dAVFs) are difficult to treat. We report our experience and propose a guideline on basis of a literature review for the usefulness of embolization of middle meningeal artery (MMA) for the treatment of the same. ⋯ Refractory chronic subdural hematoma with reaccumulation within a short interval should be subjected to digital subtraction angiography of the MMA. Embolization of ipsilateral MMA is safe, effective, and a useful option for the treatment of iatrogenic dAVF and resolution of hematoma.
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Review Case Reports
Brain Metastasis from Malignant Peripheral Nerve Sheath Tumors.
Metastatic disease is a well-known sequela of malignant peripheral nerve sheath tumors (MPNSTs). Metastic spread to the brain is unusual. ⋯ Brain metastases from MPNSTs are very rare and represent a poor prognosis, with survival after brain metastasis reported to be approximately 10 months. Early and effective initial diagnosis and treatment of MPNSTs likely represent the best opportunity for increased overall survival.
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Review Case Reports
Intramedullary recurrence of a thoracic meningioma - Presentation of an unusual case and review of the literature.
Spinal meningiomas are typically extra-axial, slow-growing, benign tumors that arise from the arachnoid cap cells. Intramedullary spinal meningiomas are exceedingly rare with few cases reported in the literature. ⋯ Intramedullary spinal meningiomas, particularly intramedullary low-grade recurrence of a previously extramedullary tumor, are rare phenomena. Although the pathogenic mechanisms are not well understood, intramedullary recurrence as described in this patient may reflect extrinsic factors related to prior surgical resections in addition to histologic progression. When operating on recurrent extramedullary lesions, aggressive arachnoid dissection may predispose patients to unusual patterns of recurrence.
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Review Case Reports
Histologic Evidence for Arteriovenous Malformation-Like Vasculature Occurring within an Intracerebral Schwannoma: A Case Report and Review of the Literature.
The phenomenon of intracerebral schwannoma is exceedingly rare, and its etiology still a matter of debate. No documented cases of intracerebral schwannoma containing vascular elements consistent with those of an arteriovenous malformation (AVM) have been reported. We describe such a case here. ⋯ To our knowledge, this is the first case of an intracerebral schwannoma with AVM-like characteristics to be reported in the literature. We hypothesize that the co-occurrence of this rare pathologic entity is caused by an interrelated etiologic process, with the tumor microenvironment of the schwannoma inciting the development of the vascular malformation.
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Review Case Reports
Extremely Delayed Multiple Brain Metastases from Renal Cell Carcinoma: Remission Achieved with Total Surgical Removal.
Late brain metastasis from renal cell carcinoma (RCC), which is generally considered as metastasis occurring more than 10 years after nephrectomy, often occurs as a solitary lesion, and total resection is recommended to achieve remission. ⋯ Total removal of late brain metastasis from RCC, even occurring with multiple lesions, can achieve total remission under specific conditions.