A plain X ray abdomen is performed in case of small bowel obstruction. Small bowel would be called dilated if its diameter is more than:: (A) 2 cm, (B) 3 cm, (C) 4 cm, (D) 5 cm
Answer is B. Normal bowel caliber: Small bowel- <3 cm Large bowel- <6 cm Caecum- <9 cm Thus, small bowel is called dilated if its caliber is >3 cm.