Department of Internal Medicine, Kaiser Permanente Oakland Medical Center, Oakland, CA.
Graduate Medical Education, Kaiser Permanente Oakland Medical Center, Oakland, CA.
Perm J. 2021 May 26;25:20.326. doi: 10.7812/TPP/20.326.
May-Thurner syndrome (MTS) is caused by extrinsic compression of the left iliac venous system, most commonly between an overlying right iliac artery and fifth lumbar vertebra, and is seen mainly in women between 20 and 50 years of age. This compression may be asymptomatic but can lead to the formation of venous thrombi causing left lower extremity pain and swelling.
We report a case of MTS in a patient who initially presented with back and left lower extremity pain and swelling whose initial duplex venous ultrasound was negative for deep venous thrombus. Subsequent computed tomography (CT) revealed a venous thrombus of the left common, internal, and external iliac veins.
In the case of unilateral lower extremity swelling with a negative initial duplex venous ultrasound, consider further investigation with CT venography to evaluate for possible MTS.
May-Thurner 综合征(MTS)是由左髂静脉系统的外在压迫引起的,最常见于上方的右髂动脉和第五腰椎之间,主要见于 20 至 50 岁的女性。这种压迫可能无症状,但可导致静脉血栓形成,引起左下肢疼痛和肿胀。
我们报告了一例 MTS 患者,该患者最初表现为背痛和左下肢疼痛肿胀,其初始双功能超声检查未见深静脉血栓形成。随后的计算机断层扫描(CT)显示左侧股总、内、外髂静脉血栓形成。
对于单侧下肢肿胀且初始双功能超声检查阴性的情况,考虑进一步进行 CT 静脉造影检查以评估是否存在 MTS 的可能。