May-Thurner Syndrome: A Rare, Yet Recognized, Cause of Deep Vein Thrombosis.

May-Thurner syndrome (MTS) involves the chronic compression of the left common iliac vein (CIV) by the overlying right common iliac artery (CIA) against the lumbar vertebrae. This compression can result in signs and symptoms of deep vein thrombosis (DVT) affecting the left side. In this case report, we present the clinical details of a 19-year-old patient diagnosed with severe MTS, which manifested as DVT with symptoms of severe thigh pain, redness, and difficulty walking. Additionally, the patient experienced pleuritic chest pain, ultimately diagnosed as pulmonary embolism (PE). Her management involved surgical removal of the thrombus and endovascular stenting of the left CIV. Following her recovery, she progressed favorably, and her follow-up assessment yielded satisfactory results.