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Titolo:
Correlation of magnetic resonance characteristics and histopathological type of angiographically occult vascular malformations
Autore:
Vanefsky, MA; Cheng, ML; Chang, SD; Norbash, A; Snipe, J; Marks, MP; Steinberg, GK;
Indirizzi:
Stanford Univ, Sch Med, Dept Neurosurg, Stanford, CA 94305 USA Stanford Univ Stanford CA USA 94305 ept Neurosurg, Stanford, CA 94305 USA Stanford Univ, Sch Med, Dept Radiol, Stanford, CA USA Stanford Univ Stanford CA USA iv, Sch Med, Dept Radiol, Stanford, CA USA Stanford Univ, Sch Med, Div Neuropathol, Stanford, CA USA Stanford Univ Stanford CA USA Sch Med, Div Neuropathol, Stanford, CA USA Stanford Univ, Sch Med, Stanford Stroke Ctr, Stanford, CA USA Stanford Univ Stanford CA USA Med, Stanford Stroke Ctr, Stanford, CA USA
Titolo Testata:
NEUROSURGERY
fascicolo: 6, volume: 44, anno: 1999,
pagine: 1174 - 1180
SICI:
0148-396X(199906)44:6<1174:COMRCA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRACRANIAL CAVERNOUS MALFORMATIONS; NATURAL-HISTORY; ANGIOMAS; BRAIN; SPECTRUM; MRI;
Keywords:
angiographically occult vascular malformation; arteriovenous malformation; cavernous malformation; histopathology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Steinberg, GK Stanford4305v, Sch Med, Dept Neurosurg, R281,300 Pasteur Dr,Stanford, CA 9 Stanford Univ R281,300 Pasteur Dr Stanford CA USA 94305 CA 9
Citazione:
M.A. Vanefsky et al., "Correlation of magnetic resonance characteristics and histopathological type of angiographically occult vascular malformations", NEUROSURGER, 44(6), 1999, pp. 1174-1180

Abstract

OBJECTIVE: Histological and radiological classification of vascular malformations has previously been attempted in an effort to understand their nature and predict their biological behavior. There exists a subgroup of vascular malformations that are angiographically occult and share a common magnetic resonance imaging (MRI) appearance but may differ in their behavior. We sought to determine any correlation between MRI features and final histopathological diagnosis. METHODS: We reviewed our series of 72 patients with angiographically occult vascular malformations operated on at Stanford University Medical Center between 1988 and 1993. Radiographic magnetic resonance images and histopathological specimens were retrospectively evaluated for various diagnostic features. RESULTS: Our data indicate that lesions exhibiting a ring of hemosiderin are associated with the presence of a cavernous malformation (CM) component (86% of CMs versus 33% of non-CM lesions). A lesion associated with edema, mass effect, or a single prominent blood product on MRI correlates with thepresence of an arteriovenous malformation (AVM) component. Sixty-three percent of AVMs and 80% of lesions with partial AVM components showed edema, compared with 8% of CMs and 0% of venous malformations. Sixty percent of AVMs and 63% of lesions with partial AVM components showed a single prominent blood product, compared with 8% of CMs and 0% of venous malformations. Finally, 60% of AVMs exhibited mass effect, compared with 20% of CMs. Additionally, an expansile hemorrhage is suggestive of an AVM. CONCLUSION: This study is the first to demonstrate that a particular MRI appearance of an angiographically occult vascular malformation is suggestiveof an AVM component. This may have important implications with regard to the behavior of the lesion and planning of future treatment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 09:23:20