Differential diagnosis of intraconal orbital masses using high-resolution MRI with surface coils in 78 patients

Over the last decade, MRI has become the standard procedure for the diagnosis of orbital masses. Purpose of the study was to evaluate criteria for differential diagnosis for intraconal masses on MRI in a large patient group. In a retrospective study, MR examinations of 78 patients with intraconal ma...

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Bibliographic Details
Published in:	RöFo : Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebende Verfahren Vol. 176; no. 10; p. 1436
Main Authors:	Lemke, A-J, Kazi, I, Landeck, L M, Zaspel, U, Hosten, N, Felix, R
Format:	Journal Article
Language:	German
Published:	Germany 01-10-2004
Subjects:	Adolescent Adult Aged Arteriovenous Malformations - diagnosis Arteriovenous Malformations - pathology Biopsy Child Child, Preschool Diagnosis, Differential Female Follow-Up Studies Hemangioma, Cavernous - diagnosis Hemangioma, Cavernous - pathology Humans Infant Lymphangioma - diagnosis Lymphangioma - pathology Lymphoma - diagnosis Lymphoma - pathology Magnetic Resonance Imaging - methods Male Middle Aged Orbit - pathology Orbital Diseases - diagnosis Orbital Diseases - pathology Orbital Neoplasms - diagnosis Orbital Neoplasms - pathology Orbital Neoplasms - secondary Orbital Neoplasms - surgery Orbital Pseudotumor - diagnosis Orbital Pseudotumor - pathology Retrospective Studies Time Factors Varicose Veins - diagnosis Varicose Veins - pathology
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Summary:	Over the last decade, MRI has become the standard procedure for the diagnosis of orbital masses. Purpose of the study was to evaluate criteria for differential diagnosis for intraconal masses on MRI in a large patient group. In a retrospective study, MR examinations of 78 patients with intraconal masses were evaluated. All examinations were performed using surface coils for high spatial resolution. Signal behavior on T2-WI and T1-WI before and after contrast application as well as further tumor characteristics (i. e., shape, size, position, delineation and infiltration) were evaluated. Every diagnosis was proven by histopathological results from extirpation (n = 18) or biopsy (n = 22), or confirmed by other imaging modalities (n = 13) or clinical course (n = 25). Different tumor characteristics are helpful in the differentiation between cavernous hemangioma, lymphangioma, varices, AV malformations and solid tumors. Due to overlapping in the imaging appearance, the differentiation between inflammatory pseudotumor, lymphoma and orbital metastasis was more difficult. While high resolution MRI using surface coils allows differentiation between the typical vascular tumors, the differentiation between solid tumors is more difficult. Thus, a histopathologic verification of the diagnosis is necessary in solid tumors.
ISSN:	1438-9029
DOI:	10.1055/s-2004-813411