title: [Lymphoscintigraphy study of oedema after femoropopliteal segment surgery].
abstract: BACKGROUND
  Post-surgical oedema of the femoropopliteal segment is a frequent complication, unrelated to the severity of the previous symptoms or changes in subsequent distal arterial pressure. The aim of the study is to assess whether the oedema present in femoropopliteal bypass patients is of lymphatic origin, and the possible influence of the prosthesis and the type of intervention used.
  
  
  METHODS
  An analytical, observational and case-control study of 30 patients who had a femoropopliteal bypass. Isotopic lymphoscintigraphy of the superficial and deep lymphatic system was performed on both limbs in all patients selected for the study.
  
  
  RESULTS
  The saphenous vein was used in 19 patients and PTFE in 11. The patients were divided into controls, 15 without oedema, and cases, 15 with oedema. Surgery technique: 9 reconstructions of the popliteal portion (1st p.p.), 18 third popliteal portion (3rd p.p.), and 3 distal branches. Scintigraphy findings: Asymmetric lymphatic drainage between the 2 limbs was observed in the all 30 examinations, except 1 case (which did not have oedema). There was no lymphatic drainage in 5 cases (one developed oedema). Cases with controls and patients with an autologous or synthetic graft, as well as shunts above and below the knee, were compared. The only statistical difference obtained was that the latter developed oedema more often than those performed close to the knee.
  
  
  CONCLUSIONS
  Therefore, the scintigraphy findings did not point to lymphatic damage as a cause of post-femoropopliteal surgery oedema. The material used did not appear to influence this. The below-knee shunts suffered more oedema than those above the knee.
authors.affiliation: Servicio de Angiología y Cirugía Vascular, Hospital Universitario Germans Trías i Pujol, Badalona, Barcelona, España. amartorell.germanstrias@gencat.cat
authors.forename: Alberto
authors.initials: A
authors.lastname: Martorell
authors.forename: Virginia
authors.initials: V
authors.lastname: Vallejos
authors.forename: Carlos
authors.initials: C
authors.lastname: Esteban
authors.forename: Marta
authors.initials: M
authors.lastname: Milá
authors.forename: José M
authors.initials: JM
authors.lastname: Callejas
authors.forename: Manuel
authors.initials: M
authors.lastname: Fraile
mesh_terms: D016022:Case-Control Studies; D004487:Edema / Q000000981:diagnostic imaging* / Q000209:etiology*; D005263:Femoral Artery / Q000601:surgery*; D006801:Humans; D061305:Lymphoscintigraphy; D011150:Popliteal Artery / Q000601:surgery*; D014656:Vascular Surgical Procedures / Q000009:adverse effects