Incidental discovery of a long standing arteriovenous XXXX after thrombectomy for acute lower limb ischaemia.

@entity1 @entity2548 @entity292 @entity2096 @entity130
INTRODUCTION: @entity2548 ( @entity2548 ) is the abnormal connection between an artery and vein. Congenital @entity2548 of the popliteal artery is very rare. PRESENTATION OF CASE: 89 year old lady presented with right acute lower limb ischaemia. She had unilateral chronic venous hypertensive change in the right leg. @entity2096 was performed. Backflow was achieved. Arteriotomy was closed. The @entity1 's leg continued to deteriorate. She returned to theatre. On-table angiogram showed an occluded SFA. Thrombectomy was completed. SFA was patent but no blood flowed into the distal popliteal artery. A second on table angiogram revealed @entity2548 between popliteal artery and vein. Dissection to the posterior aspect of the knee revealed the @entity292 . The vein was arterialized and enlarged. The @entity2548 was ligated. Normal distal blood flow was achieved. Retrospectively we measured the leg lengths. Right leg was 3cm longer than the left. The right leg circumference was 7cm greater than the left. She reported chronic venous change from a young age. She did not report any history of @entity130 to the limb. DISCUSSION: Popliteal artery to popliteal vein @entity292 is a rare. @entity130 is the most common cause of popliteal @entity2548 . Should the condition develop before closure of the epiphyses, there may be an increase in leg measurements. CONCLUSION: We postulate that this case of @entity292 may be congenital due to discrepancy in leg measurements and unilateral chronic venous hypertensive change. Rarely persistent remnants of the embryonic sciatic artery can lead to arteriovenous anastomoses, which may be a possible aetiology.
