Gastro-intestinal

FRCR 2A Gastrointestinal Revision Guide

A practical FRCR 2A gastrointestinal guide covering bowel, hepatobiliary, pancreatic, splenic, peritoneal and interventional imaging revision.

Editorial review: The 2A Bank Clinical EditorLast reviewed: August 2026How we review content

Independent guide: The RCR does not publish a fixed number of questions for each curriculum area. Use this page to organise broad preparation, then check the current candidate guidance and clinical radiology curriculum.

How to think about this curriculum area

The gastrointestinal curriculum spans bowel, liver, biliary, pancreatic, splenic, peritoneal and interventional imaging. Questions can shift rapidly from an acute abdomen to tumour staging, postoperative anatomy, fluoroscopy or an image-guided procedure.

Revision is most effective when organised around clinical problems and imaging discriminators rather than a catalogue of rare diagnoses. Distribution, enhancement pattern, duct behaviour, bowel viability and routes of spread repeatedly determine the best answer.

What the area includes

  • Oesophageal, gastric, small-bowel and colonic disease across fluoroscopy, CT and MRI
  • Acute abdomen, obstruction, ischaemia, inflammation, perforation and postoperative complications
  • Liver lesion characterisation, chronic liver disease and hepatic vascular disorders
  • Biliary obstruction, cholangitis, postoperative anatomy and intervention
  • Pancreatic inflammation, cystic lesions, neoplasia and ductal morphology
  • Spleen, mesentery, peritoneum, retroperitoneum and gastrointestinal intervention

Common single-best-answer tasks

Find the centre and route of spread

For a mass or collection, determine the organ, mural layer, compartment or ligamentous pathway from which it arises. Displacement and preserved planes are often more reliable than apparent contact.

Assess viability and complication

In obstruction or ischaemia, enhancement, wall thickness, haemorrhage, venous congestion and vascular occlusion are more important than a single dramatic sign such as pneumatosis.

Read enhancement and duct behaviour

Liver and pancreatic questions commonly depend on the sequence of enhancement or whether a duct traverses, tapers through or terminates abruptly at an abnormality.

Understand intervention and postoperative anatomy

Know common access routes, expected post-treatment appearances, recognised vascular complications and which additional angiographic territory or imaging phase should be considered.

A practical revision framework

1

Start with emergencies

Build confidence in obstruction, ischaemia, perforation, inflammatory disease, gastrointestinal bleeding and post-procedural complications. These provide high-yield principles across organs.

2

Use organ-specific lesion frameworks

For liver, pancreas and spleen, record baseline signal, enhancement, diffusion, hepatobiliary behaviour where relevant and the closest mimic. Avoid memorising enhancement phrases without chronology.

3

Map spaces and communications

Revise the lesser sac, subphrenic spaces, paracolic gutters, mesenteric compartments and retroperitoneal spaces using examples of disease spread rather than isolated diagrams.

4

Mix diagnosis with technique

Include fluoroscopy, CT protocols, MR enterography, MRCP, nuclear medicine and intervention in question blocks. Technique is part of the curriculum, not an optional appendix.

Common revision mistakes

  • Equating pneumatosis or portal venous gas with irreversible necrosis without assessing enhancement and context
  • Using one enhancement phase to characterise a lesion that requires dynamic behaviour
  • Ignoring the normal postoperative reconstruction when interpreting a collection or leak
  • Learning peritoneal spaces as names without understanding how fluid actually tracks
  • Neglecting fluoroscopy and intervention because most day-to-day revision is CT or MRI based

Readiness checklist

  • I can assess bowel obstruction for transition point, cause and ischaemia.
  • I can distinguish inflammatory, malignant and functional bowel patterns using morphology and distribution.
  • I can describe dynamic liver-lesion enhancement accurately.
  • I can interpret duct behaviour in pancreatic and biliary disease.
  • I understand major postoperative gastrointestinal reconstructions and common complications.
  • I can trace fluid and tumour spread through peritoneal and retroperitoneal compartments.
  • I can recognise common interventional complications and the appropriate next imaging step.
  • My question practice includes fluoroscopy, nuclear medicine and procedural planning.

Frequently asked questions

How should I organise gastrointestinal revision?

Use a combination of clinical problems, such as obstruction or jaundice, and organ-based lesion review. This preserves emergency reasoning while building detailed characterisation skills.

Is memorising liver enhancement patterns enough?

No. Learn the timing of enhancement, background liver, ancillary features and the alternative diagnosis that could share part of the pattern.

How much interventional radiology is relevant?

Revise common access, embolisation, drainage and biliary procedures, expected appearances and complications. The focus should be clinically useful imaging decisions rather than equipment trivia.

Continue your FRCR 2A preparation

Put the technique into practice

Try a free full-length FRCR 2A mock: 120 questions across all six curriculum areas, with flexible timing, immediate results and detailed answer review.