Stroke, Vol 20, 822-825, Copyright © 1989 by American Heart Association
VR Challa and DM Moody
Lacunar infarcts (lacunes) are small necrotic/cystic lesions of the brain
associated with hypertension. Many are clinically silent, but some are
associated with localizing symptoms and signs. Lacunes recently were
classified into three types, namely, those resulting from small infarcts
(type I), those arising as small hemorrhages (type II), and those due to
dilatation of perivascular spaces (type III). The type II lacunes are
thought to be much less common than those of type I. Type II lacunes have
not previously been reported during life. We report a case of subacute type
II lacune in the pontine tegmentum that was detected by magnetic resonance
imaging and later verified by histopathologic examination. The patient was
hypertensive and had numerous other type I lacunes. This case shows that
the magnetic resonance imaging features of hemorrhagic lacunes are
identical to those of small hemorrhages or small hemorrhagic infarcts and
that magnetic resonance imaging is a useful tool in the detection of
lacunes and their correlation with clinical neurologic symptoms and signs.
ARTICLES
The value of magnetic resonance imaging in the detection of type II hemorrhagic lacunes
Department of Pathology, Wake Forest University, Bowman Gray School of Medicine, Winston-Salem, North Carolina 27103.
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