ISSN:
1432-1084
Keywords:
Magnetic resonance imaging
;
Osteoid osteoma
;
Osteoblastoma
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract We assessed the value of contrast-enhanced fat-suppressed MRI on nine patients with osteoid osteomas and osteoblastomas. The results were compared with plain films, bone scintigraphy, computed tomography (CT) and pathological specimens. On contrast-enhanced fat-suppressed T1-weighted images the non-calcified nidi showed homogeneous enhancement, whereas the calcified lesions showed a ring enhancement sign that was proportional in intensity to the extent of the remaining part of the vascularized nidus. The degree of bone marrow and soft tissue enhancement was relative to the size and reactive inflammatory changes of the lesions. Although CT was diagnostic in most of the cases and more specific to show the calcified lesions, MRI was confirmatory in one case. We concluded that, although CT is the primary diagnostic investigation in osteoid osteomas, MRI can be reserved for equivocal cases.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00180597
