Lucent/lytic bone lesion - differential diagnosis (mnemonic)

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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 ¹.

Mnemonics

FEGNOMASHIC

F: fibrous dysplasia (FD) or fibrous cortical defect (FCD)
E: enchondroma or eosinophilic granuloma (EG)
G: giant cell tumour (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 tumour)
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 tumour (GCT) or geode
M: metastasis(es)/myeloma
A: aneurysmal bone cyst (ABC)
C: chondroblastoma or chondromyxoid fibroma
H: hyperparathyroidism (brown tumour)
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)

lytic bone lesion: main article: an approach: mnemonics
Bone lesion description (mnemonic)
Lodwick classification
modified Lodwick-Madewell classification

~~-<li><a href="/articles/lodwick-classification-of-lytic-bone-lesions">Lodwick classification</a></li>~~
+<li><p>Bone lesion description (mnemonic)</p></li>
+<li><p><a href="/articles/lodwick-classification-of-lytic-bone-lesions">Lodwick classification</a></p></li>

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