FOG MACHINES

FOG MACHINES is a mnemonic for the differential diagnosis of lucent/lytic bone lesions on plain x-ray. This is not an exhaustive list, but does cover most of the lesions seen.

Fibrous dysplasia
Osteoblastoma
Giant cell tumor

Metastasis/myeloma
Aneurysmal bone cyst
Chondroblastoma or chondromyxoid fibroma
Hyperparathyroidism (brown tumor)
Infection (osteomyelitis) or infarction
Non-ossifying fibroma
Enchondroma or eosinophilic granuloma
Simple (unicameral) bone cyst

Mnemonics are a system such as a pattern of letters, ideas, or associations which assists in remembering something.

Other podiatry relevant mnemonics:

DANG THE RAPISTHaleem’s HenCORTICOSTEROIDSCornish Ladies Grow Special BegoniasPAD and DAB
Tom, Dick and A Very Nervous HarrySOCRATESTiny Dogs Are Not HuntersPREPSOCSPLASTER OF PARIS
ADMEFOG MACHINESMAD COPLOSS9 S's and 6 D's for Charcot's Foot
CLUBBINGBIG G

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