Case 12
An elderly man with right lower quadrant pain
This 63 year old man presented with a day's history of right lower quadrant pain. His only past medical history was of an appendicectomy.
On examination he was found to be pyrexial, 38.8 °ree;C, with tenderness and guarding in the right iliac fossa. His white cell count was 19.9.
A CT scan was ordered as a diverticular abcess was suspected. What is the diagnosis?

Answer...
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