[Skip to Navigation]
April 1983

'Foreign' Particles in Encephalic Vascular Malformations

Author Affiliations

From the Department of Clinical Neurological Sciences, Divisions of Pathology (Neuropathology) (Drs Vinters and Kaufmann) and Surgery (Dr Drake), University Hospital and University of Western Ontario, London.

Arch Neurol. 1983;40(4):221-225. doi:10.1001/archneur.1983.04050040051008

• Among 84 surgically resected arteriovenous malformations (AVMs), four were found to have retractile foreign particles lined by endothelium in the vessel walls. In three cases, this was associated with granuloma formation. The particles were probably introduced during cerebral angiography. They represent a not unusual pathologic finding, are relatively more common in AVMs than in other neurosurgically excised lesions, and may have clinical significance, especially if abundant.