Characteristics of Cranial Aneurysmal Bone Cyst on Computed Tomography and Magnetic Resonance Imaging

Aneurysmal bone cysts are benign bone tumors that most commonly occur in people younger than 30 years. The cysts are most often found in the metaphyses of long bones and rarely affect the skull. We present a 54-year-old woman with a rapidly enlarging mass in the left occipital region that caused ten...

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Bibliographic Details
Published in:Journal of the Formosan Medical Association 2007-03, Vol.106 (3), p.255-259
Main Authors: Lin, Sen-Ping, Fang, Ying-Chen, Chu, Da-Chen, Chang, Yi-Chin, Hsu, Chien-I
Format: Article
Language:English
Subjects:
Bone Cysts, Aneurysmal - diagnosis
Bone Cysts, Aneurysmal - pathology
Bone Cysts, Aneurysmal - surgery
Brain Diseases - diagnosis
Brain Diseases - pathology
Brain Diseases - surgery
Female
Humans
Magnetic Resonance Imaging
Middle Aged
Tomography, X-Ray Computed
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Summary:Aneurysmal bone cysts are benign bone tumors that most commonly occur in people younger than 30 years. The cysts are most often found in the metaphyses of long bones and rarely affect the skull. We present a 54-year-old woman with a rapidly enlarging mass in the left occipital region that caused tenderness for 2 weeks. Computed tomography (CT) revealed an expansile, osteolytic lesion with characteristic soap-bubble appearance and fluid-fluid levels. Magnetic resonance images showed a dark rim surrounding the lesion, as well as multilocular spaces with fluid-fluid levels. The tumor was soft, fragile, and pulsatile during surgery. The patient was treated with en bloc resection of the tumor with cranioplasty. Follow-up CT 5 months later showed no evidence of recurrence.
ISSN:0929-6646
DOI:10.29828/JFMA.200703.0024