title: Late Allograft Renal Vein Thrombosis Treated With Anticoagulation Alone: A Case Report.
abstract: BACKGROUND
  Allograft renal vein thrombosis is a rare complication of kidney transplantation. Most cases occur in the first 2 weeks after transplantation, but there are cases described many years after the transplant surgery. Allograft loss is the usual outcome.
  
  
  METHODS
  We present a case of a renal transplant recipient with allograft renal vein thrombosis associated with deep venous thrombosis of a lower limb, 9 years after transplantation. He was successfully treated with anticoagulation alone, with recovery of allograft function.
  
  
  RESULTS
  The patient was given unfractioned heparin and elastic compression stockings. Five days later, the patient recovered diuresis and hemodialysis treatment was discontinued. Doppler ultrasound was done and revealed partial re-permeabilization of allograft renal vein, with maximal velocity of 15 cm/s. After 30 months of follow-up, the patient was maintained on oral anticoagulation with warfarin, and no thromboembolic or hemorrhagic events were documented. The patient's serum creatinine was stable, between 1.6 and 1.8 mg/dL.
  
  
  CONCLUSIONS
  Our patient demonstrated that anticoagulation alone and dialytic support might be able to promote total recovery of allograft function after renal vein thrombosis.
authors.affiliation: Department of Urology of Unidade Local de Saúde de Matosinhos, Porto, Portugal. Electronic address: carlosferreira.esr@gmail.com.
authors.forename: C
authors.initials: C
authors.lastname: Ferreira
authors.affiliation: Department of Nephrology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: L
authors.initials: L
authors.lastname: Pereira
authors.affiliation: Department of Urology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: P
authors.initials: P
authors.lastname: Pereira
authors.affiliation: Department of Nephrology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: I
authors.initials: I
authors.lastname: Tavares
authors.affiliation: Department of Nephrology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: S
authors.initials: S
authors.lastname: Sampaio
authors.affiliation: Department of Nephrology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Bustorff
authors.affiliation: Department of Nephrology of Centro Hospitalar de São João, Porto, Portugal.
authors.forename: M
authors.initials: M
authors.lastname: Pestana
mesh_terms: D064591:Allografts; D000925:Anticoagulants / Q000627:therapeutic use*; D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000188:drug therapy / Q000209:etiology; D006435:Renal Dialysis; D012082:Renal Veins; D053828:Stockings, Compression; D014184:Transplantation, Homologous; D020246:Venous Thrombosis / Q000188:drug therapy* / Q000209:etiology; D014859:Warfarin / Q000627:therapeutic use
chemical_list: D000925:Anticoagulants; D014859:Warfarin; D006493:Heparin