Table 2:
Mnemonic for Musculoskeletal Lesions with Fluid-Fluid Levels on MRI.
G
Giant cell tumors
O
Osteoblastoma
A
Aneurysmal bone cyst
T
Telangiectactic osteosarcoma
S
Sarcomas (esp. synovial)
C
Chondroblastoma
S
Simple bone cyst and synovial hemangioma
F
Fibroxanthoma (non-ossifying fibroma)
Bell DJ, Chen T. Fluid-fluid level containing musculoskeletal lesions (mnemonic).
https://radiopaedia.org/articles/fluid-fluid-level-containing-bone-lesions-mnemonic?lang=us