VIDEO :
All'esame ecografico il rene trapiantato appare di dimensioni aumentate con sdifferenziazione cortico-midollare e riduzione degli echi pielici.
Al Colordoppler la vascolarizzazione è deficitaria a livello corticale con arterie interlobari che presentano una buona componente sistolica , ma scarsa od assente componente diastolica ed alti indici di resistenza ( > 0.8 ).
VIDEO ANGIOGRAFIA:
VIDEO :
L'Ecografia con studio ecocolor Doppler dopo embolizzazione , dimostra una completa devascolarizzazione del rene trapiantato
CASO CLINICO
PRESENTATION
Patient, male , 55 years old who underwent a renal transplantation on August 2002
On October 2007, because of a chronic transplant nephropathy restarted haemodialysis.
Then the immunosuppressive therapy , sirolimus and cyclosporine, was discontinued and steroid was decreased.
On February 2008 was admitted in the hospital due to haematuria, pain of the graft, fatigue and anemia.
Gray scale ultrasonographic findings demonstrate renal enlargement, decreased echogenicity of the renal cortex, loss of corticomedullary differentiation, prominent pyramids, and effacement of the central sinus echo complex.
Color Doppler ultrasonography findings demonstrate scarce parenchymal vascularity and interlobar arteries with normal systolic flow and scarce or absence diastolic flow
( Increased I.R. > 0.8 ). [video1]
A bolus of Methilprednisolon was performed which improved the clinical picture.
The steroid therapy was continued at 5 mg per day per os and the patient was discharged from the hospital
On February 14 the patient was reametted at the hospital because of fatigue, fever, pain of the graft and anemia.
CRP was 15 mg/dl and WC 12.000/mm�.
At this point the patient was admitted in angiography for the embolization of the transplanted kidney. [video2]
After embolization the examination of Color Doppler ultrasound shows a total absence of vascular flow in the transplanted kidney. [video3]
Three days after the procedure, he was discharged with the resolution of the clinical picture.
FINAL DIAGNOSIS:
RENAL TRANSPLANTATION : THE GRAFT INTOLERANCE SYNDROME ( GIS )
DISCUSSION
The graft intolerance syndrome , GIS , shows up during the decrease or the discontinuation of the immunosuppressive therapy in renal transplated patients that restarted the haemodialytic treatment due to chronic rejection or chronic transplant nephropathy . The syndrome is caraterized by fever, local pain and haematuria and may lead to a chronic inflammatory disease with increase of CRP and anemia resistant to normal EPO dose. Is not always possible to control the clinical situation with medical therapy such as steroids and often is necessary to perform the nephrectomy of the graft . This procedure is considered the classical treatment of this pathologic picture that it is an invasive procedure that may lead to high haemorragic and cardiovascular risks. Many years experiences suggest the graft vascular embolization as possible alternative treatment to transplantectomy.
The procedure consists on the percutaneus embolization of the kidney.
We , at first , use some silicon particles of 100 – 300 micron to obtain a definitely occlusion even of the smallest artery to avoid that they can be reperfused anymore by collateral circulation .
Then we definitely close the renal artery and its segmentary branches with acrilyc glue ( Glubran ) mixed with lipiodol 2.5: 1
REFFERENCES :
C. González-Satué;et Al . Percutaneous embolization of the failed renal allograft in patients with graft intolerance syndrome. BJU International .Volume 86 Issue 6 Page 610-612, October 2000
P. Delgado et Al . Intolerance syndrome in failed renal allografts : Incidence and efficacy of percutaneous embolization American journal of kidney diseases (Am. j. kidney dis.) 2005, vol. 46, no2, pp. 339-344
Eli Atar et Al ; Nonfunctioning Renal Allograft Embolization as an Alternative to Graft Nephrectomy: Report on Seven Years' Experience ; CardioVascular and Interventional RadiologyVolume 26, Number 1 / February, 2003 Larini P, Marcato C, Monaco D, Bresciani P, Capocasale E, Mazzoni MP, Dalla Valle R, Busi N.
Percutaneous renal artery embolisation of non-functioning allograft. Preliminary experience.
Radiol Med (Torino). 2005 Nov-Dec;110(5-6):501-5.
Pérez Martínez J, Gallego E, Juliá E, Llamas F, López A, Palao F, Lorenzo I, López E, Illescas ML, Gómez Roldán C. Embolization of non-functioning renal allograft: efficacy and control of systemic inflammation
Nefrologia. 2005;25(4):422-7.
Capocasale E, Larini P, Mazzoni MP, Marcato C, Dalla Valle R, Busi N, Monaco D, Benozzi L, Sianesi M.
Percutaneous renal artery embolization of nonfunctioning allograft: preliminary experience.
Transplant Proc. 2005 Jul-Aug;37(6):2523-4.
RENAL TRANSPLANTATION : THE GRAFT INTOLERANCE SYNDROME ( GIS )