Gliosarcomas (GS) are high grade, rare tumours. Radiologically they are seen as a surfacing lesion, often having a thick dural attachment located within the parenchyma of the brain. We report a very unusual case of an intraventricular non-parenchyhmal gliosarcoma in a 60-yearold female. Magnetic resonance imaging of the brain revealed a well defined brilliantly enhancing mass located in the septal region and extending into the body and the frontal horn of the lateral ventricle on either side. The mass was isointense on T1-weighted sequences and hypointense on T2-weighted sequences. Very few reports that describe this entity exist and our case report adds to the sparse literature.KeywoRds: Gliosarcoma, Intraventricular, Non parenchymal ÖZ Gliosarkomlar (GS) yüksek dereceli, nadir tümörlerdir. Radyolojik olarak sıklıkla beyin parankiminde bulunan kalın dural bir tutulma kısmıyla yüzeye çıkan bir lezyon olarak görülürler. Burada 60 yaşında bir kadında intraventriküler nonparenkimal gliosarkom şeklinde çok nadir bir vakayı sunuyoruz. Beynin manyetik rezonans görüntülemesi septal bölgede çok parlak şekilde kontrast madde tutan iyi tanımlanmış bir kitleyi ve her iki tarafta lateral ventrikülün frontal kornusu ve gövdesine uzanmasını gösterdi. Kitle T1 ağırlıklı dizilerde izointens ve T2-ağırlıklı dizilerde hipointensti. Bu varlığı tanımlayan çok az sayıda rapor vardır ve vaka raporumuz bu az sayıda yayına katkıda bulunmaktadır.
DescriptionA 37 year-old female underwent microvascular decompression (MVD) for right Trigeminal neuralgia TN. She presented with recurrent facial pain after 1.5year of MVD. Teflon was used as an inert material and placed between the nerve and offending vessels for the MVD. She underwent MRI-Head which revealed lobulated hypointense lesion in the right cerebellopontine angle involving cisternal segment of trigeminal nerve (TGN) on FIESTA sequence ( Figure 1A). Post contrast enhancement was seen on T1-weighted image ( Figure 1B) raising the suspicion for active granulomatous lesion. Blooming was noted on susceptibility image ( Figure 1C) which represents either calcification or blood degradation products. No neurovascular contact was found on MR-angio TOF image ( Figure 1D). She underwent re-exploration for the complete removal of the granuloma. Histopathological examination of the enhancing mass confirmed the findings of granulomatous inflammation. Post-operative follow-up was uneventful with no neurological deficit. AbstractTeflon is an inert material used for microvascular decompression and placed between the trigeminal nerve and offending vessel. Teflon granuloma is considered a less known cause for recurrent facial pain after MVD. Here we report our experience with Teflon ganuloma and its treatment.
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