We present a 73 year-old Japanese woman with localized scleroderma involvin
g the right side of the scalp accompanied by continuous tingling pain, who
developed insidiously progressive left hemiparesis. In magnetic resonance i
maging of the brain, an infarct first appeared in the watershed region of t
he right middle cerebral artery territory and subsequently extended to deep
white matter accompanied by scattered hemorrhages. Focal stenosis in the M
2 portion of the right middle cerebral artery was revealed on magnetic reso
nance angiography, and the distal vessels were only shown faintly. A biopsy
specimen from the sclerotic scalp lesion showed obvious thickening of vess
el walls and mild mononuclear cell infiltration. We believe that the progre
ssing ischemic stroke was caused by hemodynamic disturbances from localized
sclerotic obstruction of the middle cerebral artery, with an autoimmune pa
thogenesis. (C) 1999 Published by Elsevier Science B.V. All rights reserved
.