Remembered USMLE Question 542

[sohag100]

A 28 year-old man complains of 2-week history of watery diarrhea and 5 lb weight loss. He had no similar episodes in the past, didn't travel recently, didn't eat out or take antibiotics. He quit smoking last month after 1 PPD for 5 years. He has a family history of inflammatory bowel syndrome. His examination reveals diffuse mild abdominal tenderness and hyperactive bowel sounds. Stool analysis is negative for blood and ova.
What is in the history and/or examination could support the diagnosis of ulcerative colitis rather than Crohn's disease in this patient?
A- History of diarrhea and weight loss
B- Family history of inflammatory bowel syndrome
C- Smoking cessation
D- Negative stool analysis
E- Having first attack in his twenties
Answer: http://medical-usmle.com/?p=542