Synonym for solitary bone cyst ... A unilocular cyst containing serous fluid and lined with a thin layer of connective tissue, occurring usually in the shaft of a long bone in a child. ... Synonym: idiopathic bone cavity, osteocystoma, simple bone cyst, traumatic bone cyst, unicameral bone cyst. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973