Saddle embolus as first presentation of left atrial myxoma in a 14-year-old girl.

A 14-year-old girl was brought to the A & E department minutes after collapsing while out walking minutes earlier. She had developed sudden, severe, cramping pain in her lower abdomen and both legs, and had been incontinent of urine. Earlier that day she had an episode of diarrhoea. The girl was previously in excellent health.