"Epidemiology "
"T1: isointense-to-high signal (compared to skeletal muscle)"
"T2/STIR: high signal"
"T1 C+ (Gd): rim enhancement more common than heterogeneous enhancement 9"
"They are uni-/multilocular cysts within bone adjacent to joints. They contain mucoid viscous gelatinous material and are surrounded by a fibrous lining. Unlike subchondral cysts they do not have an epithelial or synovial lining 2. Most intraosseous ganglia are small (up to 1-2 cm) and larger lesions of >5 cm are rare 2."
"Brodie abscess"
Expected headings
"Epidemiology "
"Signal characteristics"
"The exact aetiology is unknown; theories on the pathogenesis are 1-3:"
"Intraosseous ganglia appear as solitary, unilocular or multilocular 5 lesions and are usually homogeneous with a sclerotic rim 9. Fluid-fluid levels can be rarely seen 9. Bone marrow oedema adjacent to the ganglion cyst is also common 9."