__Y6 Radiology

Question 1

CXR: SAIL sign (triangular opacity behind heart)

Loss of lung volume on L
Mediastinal shift

Answer 1

Left lower lobe collapse

Question 2

Complete ‘white out’ on CXR differentials

Answer 2

Mediastinal shift towards - lung collapse

Mediastinal shift away: pleural effusion

No shift: malignant mesothelioma

Question 3

CXR: Coin/cannon ball well-defined nodular opacities

Answer 3

Pulmonary metastasis

Question 4

CXR: Spiculated edge to a well-defined mass

Answer 4

Lung cancer
(Spikes/points on edges)

Question 5

CXR: large black opacity with no markings differentials

Answer 5

Pneumothorax

Large bullae

Question 6

Pulmonary oedema causes

Answer 6

Cardiogenic: CCF

Non-cardiogenic - ARDS, nephrotic syndrome, renal failure, smoke inhalation, near-drowning

Question 7

CT brain: Cannot see cortical sulci, all filled with whiter opacity

Answer 7

Subarachnoid haemorrhage

Question 8

Normal diameter of small and large bowel

Answer 8

Small <3cm
Transverse colon <6cm
(Caecum <8cm)

Question 9

Valvulae commitantes

Answer 9

Small bowel

Go all the way across

Question 10

Haustra

Answer 10

Haustral folds in colon

Only go partially across

Question 11

Gas on both sides of the bowel wall on AXR?

Answer 11

Rigler’s sign

with perforated bowel, shows intraperitoneal gas

Question 12

Sigmoid volvulus presentation on AXR?

Answer 12

Coffee bean sign

Comes up and out of the pelvis