Fig. 2
From: Treatment of recurrent trigeminal neuralgia due to Teflon granuloma
Histological examination showed foreign body granuloma with multinuclear giant cells (a Giemsa, ×100), containing birefringent Teflon fibers (b Elastica van Gieson, polarized light, ×100). Positive immune staining of the giant cells for CD68 (c ×200). Focal hemosiderin deposition indicating prior hemorrhage (d Prussian Blue, ×100). In places, hyalinized scar tissue was found (e EvG, ×100) with microcalcifications (f, H&E, ×200)