A 62-year-old man presents to the emergency department with acute onset abdominal pain, abdominal distension, and vomiting for 8 hours. He has a history of previous abdominal surgery 15 years ago. On examination, the abdomen is distended with visible peristaltic waves. Bowel sounds are high-pitched and tinkling. Plain radiograph of the abdomen shows dilated small bowel loops with valvulae conniventes crossing the entire width of the bowel, and a transition zone is identified. CT abdomen with IV contrast shows clustered small bowel loops in the center of the abdomen with a transition point. What is the most likely diagnosis?