Cisti ossea aneurismatica: Ruolo diagnostico della Tomografia Computerizzata e della Risonanza Magnetica

Translated title of the contribution: Aneurysmal bone cyst: Computed tomography and magnetic resonance imaging

Fabio Sandomenico, Salvatore Cappabianca, Maria Iovino, Renata Conforti, Teresa Cinque, Walter Del Vecchio

Research output: Contribution to journalArticlepeer-review


Aneurysmal bone cysts (ABC) are relatively uncommon benign expansile osteolytic lesions characterized by multiple cavities with serum-blood levels and delimited by a thin periosteal external border. The differential diagnosis is difficult to make with conventional radiography, while CT and MRI are elective techniques. Ten patients with ABC (7 central and 3 eccentric lesions) were examined with CT and MRI. Four cysts were localized at the proximal femur, 2 in calcaneal, 2 in vertebral (cervical and dorsal), 1 in libial and 1 in iliac sites. Diagnostic criteria were the presence of fluid-fluid levels and a thin hyperdense peripheral border at CT, while hyperintense cavities on T2-weighted sequences, fluid-fluid levels, pseudodiverticular features and a low-signal border were found at MRI. Intralesional levels were detected in 9 patients at CT and in 10 at MRI; the 3 peripheral cysts exhibited a hyperdense extraosseous border at CT, corresponding to the periosteal shell, considered a benignity sign. To conclude, CT and MRI, thanks to their high resolution, clearly depict the anatomopathologic features of ABC, thus allowing this type of lesion to be differentiated from other benign and malignant osteolytic lesions.

Translated title of the contributionAneurysmal bone cyst: Computed tomography and magnetic resonance imaging
Original languageItalian
Pages (from-to)525-529
Number of pages5
JournalRadiologia Medica
Issue number5
Publication statusPublished - Nov 1996

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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