On (b)(6) 2001, the patient was surgically implanted with a greenfield stainless steel vena cava filter.On (b)(6) 2019, the patient underwent a surgical procedure to remove the greenfield filter due to intermittent left back/flank pain, chronic swelling and pain of lower limb extremities (lle).The procedure required advanced complex techniques that prolonged the procedure.A 9 french sheath was unable to dislodge the filter, so a 16 french light laser sheath was used along with a pulsed laser.The filter and sheath were both removed from the patient.
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