A 54-year-old man presented to the ED with sharp abdominal pain localised to his left lower quadrant. The pain came on rapidly the day before, when he took his dog for a walk after dinner. The pain is non-radiating and worse on movement, but he has no other symptoms. Past medical history is unremarkable. His vitals were within normal limits, his abdomen was soft with no herniae or scrotal abnormalities, but he was distinctly tender in the left lower quadrant.

FBC, UEC and urinalysis were within normal limits. Following a surgical review, a CRP was ordered and the CT abdomen was obtained. Attached herewith is the report. What caused this condition and what is the diagnosis? *This case is from Docplexus Editorial Team for educational purpose only.