String of beads appearance on abdominal X-ray is seen in –: (A) Small bowel obstruction, (B) Large bowel obstruction, (C) Carcinoma of stomach, (D) Gastric outlet obstruction
Answer is A. String of beads sign is virtually diagnostic of small bowel obstruction.
String of beads in radiology

           Small bowel obstruction
           Chronic pancreatitis
           Fibromuscular dysplasia