FRCR MCQ 2

Question 1

On a chest X-ray, which of the following is a typical feature of left lower lobe collapse?

Accepted Answer

Elevation of the left hemidiaphragm with a triangular opacity behind the heart

Answer

Left lower lobe collapse produces a triangular retrocardiac opacity and elevation of the left hemidiaphragm, with mediastinal shift to the left.

Question 2

Which MRI sequence is most sensitive for detecting acute subarachnoid hemorrhage within the first 24 hours?

Accepted Answer

Gradient echo (T2*)

Answer

Gradient echo (T2*) sequences detect blood products by exploiting susceptibility effects, making them most sensitive for acute SAH, particularly small amounts.

Question 3

A patient undergoes CT urography showing a filling defect in the right renal pelvis. Which diagnosis must be excluded first?

Accepted Answer

Urothelial carcinoma

Answer

Urothelial carcinoma of the renal pelvis is the most important diagnosis to exclude, as it requires prompt surgical management and carries significant morbidity.

Question 4

Which of the following best describes the radiological appearance of pulmonary alveolar proteinosis on HRCT?

Accepted Answer

Crazy-paving pattern with ground-glass opacification and interlobular septal thickening

Answer

Pulmonary alveolar proteinosis classically shows the 'crazy-paving' pattern on HRCT, representing geographic ground-glass opacities overlaid by interlobular septal thickening.

Question 5

On ultrasound, which feature is most useful in distinguishing a simple from a complex renal cyst?

Accepted Answer

Internal echoes, septations, or wall irregularity

Answer

Internal echoes, thick septations, nodularity, or irregular walls indicate complexity and warrant further evaluation with CT for possible malignancy (Bosniak classification).

FRCR - Fellow of the Royal College of Radiologists Practice Test

FRCR - Fellow of the Royal College of Radiologists Practice Test

FRCR MCQ 2