In this case of the series we highlight attention to detail.
The authors report a young footballer who presents acutely with an irreducible, painful groin lump. An incarcerated inguinal hernia is a reasonable diagnosis in spite of a combination of intriguing examination findings. The groin is explored and there is no hernia. Instead, a blood clot is found. The wound is not closed after evacuation of the clot; the authors continue to explore until the cause is revealed and treated effectively.