Teenager with left lower quadrant pain

CT of gastrostomy tube tip in subcutaneous tissues
Axial (above left) and sagittal (above right) CT with contrast of the abdomen shows the anchoring balloon and tip of the gastrostomy tube are in the subcutaneous tissues of the anterior abdominal wall rather than in the stomach. Lateral image from an injection of the gastrostomy tube (below) shows contrast flowing through the gastrostomy tube track and entering the stomach. Again, the gastrostomy tube anchoring balloon and tip of the gastrostomy tube are not in the stomach.

The diagnosis was gastrostomy tube malfunction with migration of the gastrostomy tube tip out of the stomach.