Patient was hospitalized (b)(6) 2016 with increasing headache and increasing weakness.She had recent ct and mri of the brain which revealed edema with possible mass or possible infectious cause.Patient was taken to the operating room on (b)(6) 2016 for open tumor biopsy in the right temporoparietal region.Pathology was sent to (b)(6) and findings were returned to (b)(6) on (b)(6) 2016.Biopsy shows a presence of areas of necrosis associated with a dense polymorphonuclear cell infiltrate surrounded by a histiocystic granulomatous reaction with presence of giant cells.In one of the granulomatous, fukanebtiys granular pale blue foreign body material is identified consistent with fragments of catheter hydrophilic polymer coating.The inflammatory process appears to involve the leptomeninges as well as the underlying brain parenchyma.The presumed origin for the material would be the coating on the devices used for her mechanical thrombectomy on (b)(6) 2015.In review of literature, this appears to be a rare but reported potential complication (am j surg pathol.2008; 32: 1310-1316).
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