A 19-year-old male presents with abdominal pain since the past 2 days. The pain began in central abdomen, which has now become constant and shifted to right iliac fossa. He has vomited twice today and doesn’t want to eat any food.

He has also had loose motions today, without any rectal bleeding. Examination Temperature – 37.8◦C Pulse rate – 110/min Abdomen examination – Localized tenderness and guarding in right iliac fossa Urinalysis – Clear   Investigation                                                                            Test value                                         Normal value Hemoglobin                                                   14.2 g/dL                                           11.5-16.0 g/dL Mean cell volume                                            86 fL                                                   76-96 fL White cell count                           …