May-Thurner Syndrome in a Ten-Year-Old

May-Thurner syndrome (MTS) is an unusual cause of intermittent lower extremity edema in pediatric patients. We present the case of a 10-year-old child who presented with gradual onset of intermittent headaches, hematuria, and intermittent worsening edema of his lower extremities. After extensive evaluation, the possible cause of the lower extremity edema was determined to be MTS. Since this diagnosis is usually considered in the differential diagnosis of teenagers and adults, our case raises awareness of this possible diagnosis in younger pediatric patients suspected of having deep vein thromboses.