It seems this newborn’s gut has an instinct something is wrong, with his question-mark-shaped colon asking doctors for answers.

At just 24-hours old, the baby boy had abdominal swelling, bilious vomiting and an inability to pass meconium.

Scans showed a dilated bowel, consistent with a distal obstruction, and a distended and shortened colon in the shape of a question mark — a finding consistent with total colonic aganglionosis.

A specimen of his large intestine revealed no ganglion cells and abnormally thickened nerve fibres.