May-Thurner syndrome (MTS) is an unusual cause of deep venous thrombosis; even rarer is the spontaneous rupture of collaterals around the thrombosed common iliac vein due to MTS. We present a case of MTS which presented with left leg swelling and abdominal mass due to retroperitoneal haemorrhage.
Keywords: DVT; May-Thurner syndrome; left iliac vein.
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