Lucent/lytic bone lesion - differential diagnosis (mnemonic)

Mnemonics for the differential diagnosis of lucent/lytic bone lesions include:

• FEGNOMASHIC
• FOG MACHINES

They are anagrams of each other and therefore include the same components. They are by no means exhaustive lists, but are a good start for remembering a differential for a lucent/lytic bone lesion and will suffice for >95% of the time .

Mnemonics

FEGNOMASHIC

• F: fibrous dysplasia (FD) or fibrous cortical defect (FCD)
• E: enchondroma or eosinophilic granuloma (EG)
• G: giant cell tumor (GCT) or geode
• N: non-ossifying fibroma (NOF)
• O: osteoblastoma
• M: metastasis(es)/myeloma
• A: aneurysmal bone cyst (ABC)
• S: simple (unicameral) bone cyst
• H: hyperparathyroidism (brown tumor)
• I: infection (osteomyelitis) or infarction (bone infarction)
• C: chondroblastoma or chondromyxoid fibroma

FOG MACHINES

• F: fibrous dysplasia (FD) or fibrous cortical defect (FCD)
• O: osteoblastoma
• G: giant cell tumor (GCT) or geode
• M: metastasis(es)/myeloma
• A: aneurysmal bone cyst (ABC)
• C: chondroblastoma or chondromyxoid fibroma
• H: hyperparathyroidism (brown tumor)
• I: infection (osteomyelitis) or infarction (bone infarction)
• N: non-ossifying fibroma (NOF)
• E: enchondroma or eosinophilic granuloma (EG)
• S: simple (unicameral) bone cyst

These lists are not exhaustive (e.g. intraosseous lipoma is omitted)

Related articles

• lytic bone lesion: main article: an approach: mnemonics
  • solitary well-defined osteolytic lesions
  • solitary ill-defined osteolytic lesions
  • multiple lucent/lytic bone lesions
  • lucent/lytic rib lesion

• bone lesion description (mnemonic)

• Lodwick classification

• modified Lodwick-Madewell classification

Siehe auch:

• Aneurysmatische Knochenzyste
• benigne Osteolysen
• Chondroblastom
• maligne Osteolysen
• Ostitis fibrosa cystica