Mnemonic

Question 1

Lucent bone lesions

Answer 1

FOG MACHINE

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)/intraosseous lipoma

N: non-ossifying fibroma (NOF)

E: enchondroma or eosinophilic granuloma (EG)

S: simple (unicameral) bone cyst

Question 2

Hypercalcemia

Answer 2

Mnemonic: “PAM SCHMIDT”
- Parathyroid adenoma, hyperplasia
- Addison disease
- Milk alkali
- Sarcoid
- Carcinomatosis
- Hyperparathyroidism, secondary
- M yeloma
Immobilization
- D vitamin
- T hiazides

Question 3

Diffuse bony sclerosis (mnemonic)

Answer 3

3 M’s PROOF

M: malignancy
    metastases (osteoblastic metastases)
    lymphoma
    leukemia
M: myelofibrosis
M: mastocytosis
S: sickle cell disease
P: Paget disease of the bone/pyknodysostosis
R: renal osteodystrophy (treated secondary hyperparathyroidism)
O: osteopetrosis
O: other
    sclerotic dysplasias: osteopoikilosis, osteopathia striata, melorheostosis (usually multifocal)
    hyperthyroidism
    hypoparathyroidism
    athletes
F: fluorosis

Question 4

NF 2

Answer 4

MISME

Multiple inherited schwannoma

Meningioma

Ependimoma

Question 5

NF 1 (VRH)

Answer 5

CAFÉ SPOT

Café au lait spots,
Astrocytoma intramedullary,
Fibromas,
Eye hamartomas,
Skeletal abnormalities (kyphoscoliosis, sphoeniod dysplasia, ribbon shaphed ribs)
Optic glioma

Question 6

Idiopathic interstitial pneumonia

Answer 6

All Idiopathic Chronic Lung Disease aRe Nonspecifically Patterned

A: acute interstitial pneumonia (AIP). The only acute process in the list.
I: idiopathic pulmonary fibrosis / usual interstitial pneumonia (IPF / UIP)
C: cryptogenic organizing pneumonia (COP)
L: lymphoid interstitial pneumonia (LIP)
D: desquamative interstitial pneumonia (DIP)
R: respiratory bronchiolitis–associated interstitial lung disease (RB-ILD)
N: non-specific interstitial pneumonia (NSIP)
P: pleuroparenchymal fibroelastosis (PPFE)

Question 7

Diffused osteosclerosis:

Answer 7

5 M’S To PROoF
M: metastases
Mhyelofibrosis
Mastocytosis
Melorheostosis
Metabbolic (hyper vit D, fluororis, hypothyroidism, phosphorus poisoning)
Sickle cell
Tubberus sclerosis
Pyknodysostosis. Paget
Renal osteodystrophy
Osteopetrosis
Fluorosis

Question 8

DD cystic mediastinal mass

Answer 8

-Foregut duplication cyst: bronchogenic cyst, oesophageal cyst, neuroenteric cyst.
-Pericardial cyst
-Lymphangioma
-Thypic cyst
-Thoracic duct cyst
-Cystic teratoma
-Meningocele