Ganglion of the hip joint--we present a logical approach to the exploration of a mass in the femoral triangle.

Hip joint ganglion is a rare cause of a mass in the femoral triangle. Our patient presented with a swelling in the groin and a history of femoral hernia repair 5 years previously. Pre-operative assessment with ultrasound suggested a possible femoral artery aneurysm. We propose that safe exploration of a mass closely related to the femoral vessels must include vascular control.