高度肥満による皮下埋め込み式CVポートの変位が原因となりカテーテル逸脱をきたした1例

A totally implantable venous access system is evaluated to be safe and useful. We report a case of dislocation of catheter by displacement of implantable port caused by obesity. A 30-year-old woman was implanted a venous access system by subclavian approach and the port was placed into subcutaneous tissue of chest-wall. At 10 days after operation, chest X-P revealed displacement of the port by change of her posture. At the standing position, the port moved about 6 cm in the direction of caudate side, and the tip of catheter was just likely to be dislocated. Then we inserted a catheter via median vein and implanted a port into subcutaneous tissue of forearm. This catheter was not moved by change of her posture. It was considered that a peripheral vein approach was useful in case a subclavian vein aproach was unsuitable.