Lintene granuloma following microvascular decompression mimicking a cerebellopontine angle tumour

Foreign body granulomas after a craniotomy for meningioma

“…However, such granulomas invariably show nodular or ring-enhancing mass lesions. 2 Hence FB granulomas should be included in the differential diagnosis of an enhancing mass arising after intracranial surgery, in addition to recurrent tumor, brain abscess, or radiation necrosis.…”

Polytetrafluoroethylene-Induced Granuloma and Brainstem Cyst After Microvascular Decompression for Trigeminal Neuralgia

“…The preferred surgical treatment for severe refractory cases in patients judged at low risk for major surgery is MVD of the trigeminal nerve, which involves separating the offending vessel from the nerve root entry zone with a synthetic material (2,4,5,6,7,11,20,26,27,30,31,34,36,38,45,48). Neurosurgeons have used PTFE, Ivalon (Ivalon Inc., San Diego, CA), Gelfoam (Pfizer Inc., New York, NY), Dacron (Invista Inc., Wichita, KS), cotton, periosteum, muscle, and fascia (29,35,44). PTFE is usually the material of choice for MVD because it is inert, well-tolerated in the nervous system, resistant to resorption, and has a lower complication rate than other materials (1).…”

“…Although MVD is safe, complications may occur (4,6,26,36). Among other materials (29,35,44), surgeons have used PTFE implants to separate the trigeminal nerve root from the offending vessel in order to relieve pulsatile vascular compression on the nerve. PTFE is preferred for MVD because it is inert and devoid of adhesion properties, inflammatory response, adverse reactions, and potential for scarring in the nervous system (1).…”