外膜嚢腫により膝窩動脈閉塞をきたした１例

A 73-year-old woman presented to hospital with pain in the right leg. Right popliteal artery occlusion was diagnosed via ultrasound, and she was referred to our department for treatment. Close examination revealed that the popliteal artery was occluded by a cystic lesion, and surgery was performed. The popliteal fossa was opened, and a cystic lesion and an elastic-hard mass, both containing a gelatinous substance, were identified around the right popliteal artery. The content of the lesion was aspirated, and the walls were mobilized and resected to complete the procedure. Although pathology did not provide a diagnosis, this case was thought to be an occlusion of the popliteal artery caused by an adventitial cyst.