caa a22 4500 469094397 CHVBK 20180323133027.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00243091 doi (NATIONALLICENCE)springer-10.1007/BF00243091 Benign osteochondromas and exostotic chondrosarcomas: evaluation of cartilage cap thickness by ultrasound [Elektronische Daten] [Jacques Malghem, Bruno Berg, Henri Noël, Baudouin Maldague] Ultrasonography (US) enables accurate assessment of the cartilage cap of exostoses. The cartilage cap appears as a hypoechoic layer covering the hyperechoic surface of the calcified part. Measurements of cap thickness with US were compared with measurements performed on pathological specimens in 22 resected exostoses and 2 exostotic chondrosarcomas. The US measurements proved to be very accurate, with a mean measurement error of less than 2 mm for cartilage caps less than 2 cm thick. The detection rate and measurement accuracy of US were higher than with computed tomography (CT) and comparable to magnetic resonance imaging (MRI), which were available in 14 and 10 cases, respectively. US appears to be a good procedure for evaluating the cartilage cap, which is usually thin for a benign exostosis and thick for a malignancy. In addition, other complications — such as bursa formation — are easily recognizable. The sole limitation is that US cannot visualize the cartilage cap when it is inwardly orientated or deeply located in soft tissues, which are both, however, relatively uncommon situations. International Skeletal Society, 1992 Osteochondroma nationallicence Exostoses nationallicence Chondrosarcoma nationallicence Ultrasound, comparative studies nationallicence Bones, US studies nationallicence Malghem Jacques Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut Berg Bruno Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut Noël Henri Department of Pathology, Louvain University, St Luc University Hospital, Brussels, Belgium aut Maldague Baudouin Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut Skeletal Radiology Springer-Verlag 21/1(1992-01-01), 33-37 0364-2348 21:1<33 1992 21 256 https://doi.org/10.1007/BF00243091 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00243091 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Malghem Jacques Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut NATIONALLICENCE 700 1- Berg Bruno Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut NATIONALLICENCE 700 1- Noël Henri Department of Pathology, Louvain University, St Luc University Hospital, Brussels, Belgium aut NATIONALLICENCE 700 1- Maldague Baudouin Department of Radiology, Louvain University, St Luc University Hospital, Brussels, Belgium aut NATIONALLICENCE 773 0- Skeletal Radiology Springer-Verlag 21/1(1992-01-01), 33-37 0364-2348 21:1<33 1992 21 256 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer