Parosteal aneurysmal bone cyst

Abstract

The incidence of aneurysmal bone cysts is 0.14 cases per 100,000 individuals. Parosteal aneurysmal bone cysts are the least prevalent subtype and represent 7% of all aneurysmal bone cysts. We present the case of a 38-year-old male patient with pain and bulging in his right arm for eight months. He had previously been diagnosed as presenting giant-cell tumor, but his slides were reviewed and his condition was then diagnosed as parosteal aneurysmal bone cyst. The patient was treated with corticosteroid and calcitonin infiltration into the lesion and evolved with clinical and radiological improvement within the first five weeks after the operation.

Primary Aneurysmal Bone Cyst of Long Bones Treated with a Single Dose of Calcitonin and Methylprednisolone Percutaneous Intralesional Injection: A Case Series and Literature Review

“…Calcitonin and methylprednisolone doses were decided empirically. Similar to the previous study, fixed doses were injected regardless of the lesion size [19][20][21][22]36]. Subsequent sclerosis and shrinkage of the lesion and resolution of symptoms were observed.…”

“…In a more recent published case report regarding this technique by Meohas et al, parosteal ABC at the diaphyseal humerus healed after a single-dose injection of a combined drug [36]. The study is the first to report extraaxial ABC treated by a combination therapy.…”

“…Selective arterial embolization and sclerotherapy are the most frequently used nonsurgical methods [7,10]. However, calcitonin and methylprednisolone injection is a promising percutaneous method expected to lower the rate of complications [19][20][21]36].…”

“…To the best of our knowledge, five published manuscripts reported on the use of this method, with only 7 cases treated with intralesional injection of a calcitonin and steroid combination [19][20][21][22]36]. Although the spine is involved in only 15% of the cases; in the studies, the majority of ABCs are located in the spine [19][20][21][22].…”

Tibial periosteal ganglion cyst: The ganglion in disguise

“…CT and MRI show heterogeneous fluid-fluid levels in loculation. [13] Hydatid cyst of bone appears as round or ovoid cystic lesion often with double arcuate calcification on CT, with parent cyst having signal intensity similar to muscle and secondary cyst to that of water in T1 sequences. [14]…”