Spontaneous Rapid Regression Of A Juvenile Primary Aneurysmal Bone Cyst Of The Skull: A Case Report And Literature Review
Borni, M., Kolsi, F., Cherif, I., & Boudawara, M. Z. (2022). Spontaneous rapid regression of a juvenile primary aneurysmal bone cyst of the skull: A case report and literature review. Radiology case reports, 17(5), 1634–1639. https://doi.org/10.1016/j.radcr.2022.02.037
View Original Source →Abstract
Aneurysmal bone cyst (ABC) is a benign lesion that often starts off the metaphysis of long bones and which, as it grows, may blow out bone. Only 3%-6% of cases are located in the skull. Spontaneous recovery has been reported. These cases occur more often in adults and in pelvic locations. Spontaneous regression at the skull level remains a very rare entity and few cases were described in the literature. Here, the authors report another case of spontaneous rapid regression of ABC of the skull in a 7-year-old boy revealed by gradually increasing painless hard swelling in the right frontal bone region with rapid spontaneous regression within 15 days. The authors will also proceed with an overview concerning this rare entity.
Case Details
Disease Location
Right frontal bone
Personal Characteristics
7-year-old boy
Clinical Characteristics
3-month history of gradually increasing painless hard swelling in the right frontal bone region just behind his natural hairline. Physical examination: painless and non–tender mass, 4 × 4.5 × 4 cm in size, which was firm to hard, and fixed to bone with smooth surface CT showed an expansile extra-axial osteolytic heterogeneous mixed density mass of the right frontal bone of 4.5 cm in diameter causing break and thinning of both outer and inner cortex. It was in direct contact with the superior sagittal venous sinus this lesion had internal septation giving a soap-bubble aspect, taking irregular variegated enhancement. Some cysts are spontaneously hyperdense indicating hemorrhagic sediment. Transfemoral angiographic study of both external carotid arteries showed that tumor derived its blood supply mainly from both anterior and posterior frontal branches on selective injection of the superficial temporal artery. It was diagnosed as an aneurysmal bone cyst
Remission Characteristics
2 weeks later he presented for spontaneous regression of his painless swelling the MRI showed that the overall size of the cyst had hugely decreased
Treatment & Mechanisms
Proposed Remission Mechanisms
None reported
Clinical Treatment
None reported
Non-Clinical Treatment
None reported