CENTRAL NERVOUS SYSTEM

1. Tram track appearance - Sturge Weber Syndrome

2. Crescent shaped opacity in skull - Subdural hematoma

3. Banana sign - Spinal Bifida

4. Increased Bone density - Fluorosis , Osteoporosis, Hyperparathyroidism.

 SKELETAL SYSTEM

1. Bamboospine, squaring of vertebrae - Ankylosing Spondylosis

2. Fish mouth vertebra - Homocystinuria, sickle cell

3. Vertebrae plana - Eosinophilic granuloma

4. Hair on end appearance of skull - Thalessemia, Hemolytic anemia

5. Pencil in cup deformity - Psoriasis

6. Soap bubble appearance - Osteoclastoma

7. Onion peel appearance - Ewing's sarcoma

8. Sun ray appearance - Osteosarcoma

RESPIRATORY SYSTEM

1. Water lily sign - Hydatid cyst

2. Miliary shadows - Sarcoidosis, Pneumoconiosis , Mitral Stenosis, Tuberculosis

3. Egg cell calcification - Silicosis

4. Kerley B lines - Pulmonary oedema (>16cm)

5. Shrinking lung syndrome - Systemic lupus erythromatosis.

6. Sail sign - Thymus.

GIT SYSTEM

1. Bird beak oesophagus - Achlasia cardia

2. Cork screw oesophagus - Diffuse esophageal spasm

3. Coffee bean sign - Sigmoid Volvulous

4. Air under diaphragm - Perforation of viscera

5. Thumb printing - Ischaemic colitis

RENAL SYSTEM

1. Spider leg deformity - Polycystic kidney disease

2. Timble bladder - TB bladder

3. Flower base kidney - Horse shoe kidney