Rheum X ray differences

Question 1

Osteoarthritis

Answer 1

LOSS

Loss of joint space
Osteophytes (bony overgrowth)
Subarticular Sclerosis (end of bone thickened)
Subchondral cysts

Question 2

Rheumatoid arthritis

Answer 2

LBSP

Loss of joint space
Bone erosion
Soft tissue swelling
Periarticular osteoporosis

Question 3

Pseudogout

Answer 3

Chondrocalcinosis - calcification of articular cartilage

Question 4

Osteomyelitis

Answer 4

• Involucrum and Sequestrum sometimes visible.
• Local osteopenia
• Cortical bone loss

Question 5

Ankylosing Spondylitis

Answer 5

Sacroiliac fusion
Facet fusion
Bamboo spine
Squaring of vertebral bodies
Syndesmophytes

Question 6

Psoriatic arthritis

Answer 6

Pencil in cup appearance
Osteolysis (bone loss)
Dactylitis 
Ankylosis (bone fusion)
Periostitis

Question 7

Paget’s disease

Answer 7

Bone enlargement
Osteolytic lesions (osteoporosis circumscripta)
Cotton wool appearance of skull
V shaped defects of long bones

Question 8

Hyperparathyroidism

Answer 8

Pepperpot skull

Question 9

COPD

Answer 9

Flattened diaphragm
Hyperinflation
Bullae

Question 10

Pleural effusion

Answer 10

Blunting of costophrenic angle
Fluid in lung fissures
Tracheal and mediastinal deviation

Question 11

Pneumothorax

Answer 11

Visible visceral pleural edge

Or mediastinal shift and tracheal deviation in tension