Free practice question 4 of 20 · Abdomen & pelvis
An original single best answer question in the style of the MRCS Part A paper, with the answer and a referenced explanation. Pick an answer to reveal it, then rate how sure you were.
A 72-year-old woman taking apixaban develops sudden lower abdominal pain after a bout of coughing. There is a tender, non-pulsatile mass in the right lower quadrant that remains palpable and becomes more tender when she lifts her head from the pillow.
Which vessel is the most likely source of bleeding?
Topic guide
Abdomen & pelvis: what the exam tests
Syllabus coverage, high-yield themes and the common traps.
Free article
Inguinal canal and hernia anatomy: walls, rings, the cord and the femoral canal
Inguinal canal anatomy for MRCS Part A: walls, rings, cord coverings, indirect versus direct hernias, the femoral canal, surface landmarks and nerves at risk.
Free article
The femoral triangle and femoral canal: boundaries, contents and femoral hernia
Femoral triangle for MRCS Part A: boundaries, roof and floor, contents in order, the femoral sheath and canal, femoral hernia and profunda branches.
Free article
Calot's triangle and biliary anatomy: the hepatocystic triangle, the cystic artery and safe cholecystectomy
Calot's triangle for MRCS Part A: hepatocystic boundaries and contents, cystic artery and duct variants, the critical view of safety and bile duct injury.
Interactive 3D
Pelvis & acetabulum
The bony pelvis seen from the front: the two hip bones, the sacrum and coccyx, the sacroiliac joints, the pubic symphysis, the obturator foramina and the acetabula.
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