Abstract
Repcu~ted is a case of a fcn~eign-body granuloma that caused repeated convulsions after a craniotomy.In August 1992, the patients a 62-year-old female, had undergone surgery at another hospital due to severe intracranial bleeding. Following this surgery, her condition was fine for a 5-month period. However, from January through March 1993, She began experiencing repeated convulsive attacks. On coming under the authors' care, CT scans showed a small area of high density in the right posterior temporal lobe. Further, on MRI inspection, this small area enhanced heterogeneously, whereas it had not shown any CT enhancement. Thus, this small area was entirely extirpated. A histological study of a resected specimen led to diagnosis of a foreign-body granuloma that had been caused by a microfibrillar collagen hemostat (MCH, AviteneR ) . After this surgery, the convulsive attacks disappeared. Based on this experience, when performing a craniotomy, care should be taken to the use and the washing of the MCH.
