Prostaglandin Levels in a Unicameral Bone Cyst Treated by Corticosteroid Injection

Unicameral bone cysts are benign processes of obscure origin. Surgical treatment has not been encouraging; however, in the past decade, corticosteroid injection has afforded good results. The reason for the efficacy of steroid treatment has not been demonstrated. We measured the prostaglandin level in the aspirated fluid of a unicameral cyst before and 4 months after corticosteroid injection. A basis for treatment of the benign bone cyst is postulated.