Unilateral Leg Swelling and Liver Enzyme Elevation in an Adolescent

A previously healthy 15-year-old female developed sudden onset right lower extremity swelling, pain, and erythematous linear streaking from the ankle to mid-thigh. Duplex venous ultrasound revealed multiple superficial and deep venous thrombi in the right lower extremity. Incidentally, the patient was also noted to have elevated transaminases and a microcytic anemia with significant iron deficiency. Additional evaluation ultimately led to the diagnosis of 2 distinct but interconnected chronic conditions, one of which progressed to requiring liver transplantation.