06 March 2017 : Case report
Unknown etiology, Challenging differential diagnosis, Unusual or unexpected effect of treatment, Educational Purpose (only if useful for a systematic review or synthesis)Adrian DaSilva-DeAbreu1ABDEF*, Luke Masha2ABDEF, Shareez Peerbhai1BDEF
Am J Case Rep 2017; 18:226-229
BACKGROUND: The etiology of deep venous thrombosis (DVT) may pose a significant diagnostic challenge because truly reversible causes of DVT are rare. In this regard, known pelvic anatomic abnormalities such as aortic and iliac aneurysms should be seriously considered as a complicating factor in patients presenting with acute DVT so as not to miss a potentially curable etiology of May-Thurner syndrome (MTS).
CASE REPORT: We report the case of a 69-year-old man with a known abdominal aortic aneurysm and bilateral iliac artery aneurysms who presented with an acute DVT. A computed tomography scan of the abdomen and pelvis showed increased dilation of his aneurysmal disease with new resultant compression of the left iliac vein representing acquired MTS. The patient underwent endovascular aneurysm repair of the infra-renal abdominal aortic aneurysm and right common iliac artery aneurysm with a Gore Excluder endoprosthesis in lieu of venous stenting, with resolution of symptoms.
CONCLUSIONS: Infra-renal aortic and iliac aneurysms causing MTS are extremely rare, and patients at risk for MTS through these mechanisms do not fit the classical demographics associated with this syndrome. Furthermore, this is the first case described in which MTS was treated by addressing the aneurysm through an endoprosthetic approach instead of venous stenting, which is the conventional intervention for MTS.
Keywords: Anticoagulants, endovascular procedures, Iliac Aneurysm, May-Thurner Syndrome, Venous Thrombosis
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