Lucent/lytic bone lesion - differential diagnosis (mnemonic)

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Mnemonics for the differential diagnosis oflucent/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)
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)
C: chondroblastoma or chondromyxoid fibroma

FOG MACHINES

F: fibrous dysplasia (FD) or fibrous cortical defect (FCD)
O: osteoblastoma
G: giant cell tumour (GCT)
M: metastasis(es)/~~myeloma~~/myeloma
A: aneurysmal bone cyst (ABC)
C: chondroblastoma or or chondromyxoid fibroma
H: hyperparathyroidism (~~brown~~ (brown tumour)
I: infection (osteomyelitis)
N: non-ossifying fibroma (NOF)
E: enchondroma or 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
- multiple lucent/lytic bone lesions
- lucent/lytic rib lesion
Lodwick classification

~~-Mnemonics for the differential diagnosis of lucent/lytic bone lesions include:<ul>~~
~~-<li>FEGNOMASHIC</li>~~
~~-<li>FOG MACHINES</li>~~
+Mnemonics for the differential diagnosis of lucent/lytic bone lesions include:<ul>
+<li>FEGNOMASHIC</li>
+<li>FOG MACHINES</li>
~~-I: <a title="Osteomyelitis" href="/articles/osteomyelitis">infection (osteomyelitis)</a>~~
+I: <a href="/articles/osteomyelitis">infection (osteomyelitis)</a>
~~-F: <a href="/articles/fibrous-dysplasia">fibrous dysplasia (FD)</a> or <a href="/articles/fibrous-cortical-defect">fibrous cortical defect (FCD)</a>~~
~~-</li>~~
+F: fibrous dysplasia (FD) or fibrous cortical defect (FCD)</li>
~~-O: <a href="/articles/osteoblastoma">osteoblastoma</a>~~
~~-</li>~~
+O: osteoblastoma</li>
~~-G: <a href="/articles/giant-cell-tumour-of-bone">giant cell tumour (GCT)</a>~~
~~-</li>~~
+G: giant cell tumour (GCT)</li>
~~-M: <a href="/articles/bony-metastases">metastasis</a>(es)/<a href="/articles/multiple-myeloma-1">myeloma</a>~~
~~-</li>~~
+M: metastasis(es)/myeloma</li>
~~-A: <a href="/articles/aneurysmal-bone-cyst">aneurysmal bone cyst (ABC)</a>~~
~~-</li>~~
+A: aneurysmal bone cyst (ABC)</li>
~~-C: <a href="/articles/chondroblastoma">chondroblastoma</a> or <a href="/articles/chondromyxoid-fibroma">chondromyxoid fibroma</a>~~
~~-</li>~~
+C: chondroblastoma or chondromyxoid fibroma</li>
~~-H: <a href="/articles/hyperparathyroidism">hyperparathyroidism</a> (<a href="/articles/brown-tumour">brown tumour</a>)</li>~~
+H: hyperparathyroidism (brown tumour)</li>
~~-I: <a href="/articles/osteomyelitis">infection (osteomyelitis)</a>~~
~~-</li>~~
+I: infection (osteomyelitis)</li>
~~-N: <a href="/articles/non-ossifying-fibroma-1">non-ossifying fibroma (NOF)</a>~~
~~-</li>~~
+N: non-ossifying fibroma (NOF)</li>
~~-E: <a href="/articles/enchondroma">enchondroma</a> or <a href="/articles/langerhans-cell-histiocytosis-skeletal-manifestations-1">eosinophilic granuloma (EG)</a>~~
~~-</li>~~
+E: enchondroma or eosinophilic granuloma (EG)</li>
~~-S: <a href="/articles/unicameral-bone-cyst-ubc">simple (unicameral) bone cyst</a>~~
~~-</li>~~
+S: simple (unicameral) bone cyst</li>

Updates to Synonym Attributes

Title was changed:

FEGNOMASHIC (mnemonic)

Updates to Synonym Attributes

Title was changed:

FOG MACHINES (mnemonic)

Updates to Synonym Attributes

Title was changed:

FOGMACHINES (mnemonic)

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