This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Acute appendicitis is characterized by all of the following except: September 2005 \nSelect and explain. \nA. Anorexia, B. Rovsing's sign, C. Fever >42 degree celsius, D. Peri-umbilical colic", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C: Fever >42 degree celsiusAppendicitis is more common in men The risk of perforation is:Less than 10 years old = 50%10-50 years old = 10%Over 50 years old = 30%Clinical features of appendicitis:Central abdominal pain moving to right iliac fossaNausea, vomiting, anorexiaLow-grade pyrexia (37.2-37.7 degree celsius)Localised tenderness in right iliac fossaRight iliac fossa peritonismPercussion tenderness is a kinder sign of peritonism than reboundRovsing's sign = pain in right iliac fossa on palpation of the left iliac fossa", 'role': 'assistant'}]