Learning objectives
In the era of laproscopic donor nephrectomy the surgeon needs to be totally aware of every detail of the surgical field before going in
As the eye sees what the mind knows we need to be well versed with common variations in renal vasculature and collecting system and their implications for surgeon
Some anomalies like horseshoe kidney,
unilateral agenesis,
medullary sponge kidney and severe hydronephrosis form absolute contraindications for kidney donation
There are other findings like renal ectopia,
pelviureteric junction obstruction,
small calculi,
small benign...
Background
With laproscopic nephrectomy becoming the norm,
it is crucial to be meticulous in reporting as intraoperative visibility is limited.
WHICH KIDNEY IS BETTER FOR DONATION
Left renal vein(7.5 cm) is longer than the right(2.5 cm) making surgery simpler (Figure 1)
Even left kidneys with one or two accessory arteries or veins are preferred over right (1)
If one kidney is abnormal but not contraindicated for transplantation,
the abnormal kidney is harvested
If both the kidneys are normal the one with less complicated vascular anatomy is...
Imaging findings OR Procedure details
Multiphasic computed tomography is done in all patients on Somatom Definition Flash SIEMENS 256 slice scanner.
Our protocol includes noncontrast,
arterial,
venous and excretory phases using bolus tracking technique.
Positive oral contrast is not given as it obscures arterial anatomy.
Noncontrast scan
helps pick up small calculi
detect subtle arterial enhancement in a renal cyst.
Arterial phase
good to comment on the anatomy of both arteries and veins as the renal veins enhance quickly.
Venous phase
Difficult to comment on venous anatomy as both arteries...
Conclusion
Two things form the backbone of donor evaluation
Familiarity with normal and abnormal findings
Awareness of what the surgeon actually needs to know
Comprehensive preoperative evaluation of donor kidney including structural anomalies,
vessel anatomy and collecting system must be stressed upon to help surgeon maximally
References
1.
Mandal AK,
Cohen C,
Montgomery RA et al.
Should the indications for laparoscopic live donor nephrectomy of the right kidney be the same as for the open procedure?—anomalous left renal vasculature is not a contraindicationto laparoscopic left donor nephrectomy.Transplantation 2001; 71:660–664
2.
Williams PL,
WarwickR,
Dyson M et al.
Gray’s anatomy.37th ed.
New York: Churchill Livingstone,1989; 1397–1416.
3.
Kawamoto S,
Montgomery RA,
Lawler LP,
Horton KM,
Fishman EK.
Multi–detector row CT evaluation of living renal donors prior to laparoscopic nephrectomy.
RadioGraphics 2004;24(2):453–466.
4.
Sebastià...
Personal Information
Zohra Ahmad MBBS,
Third year Junior Resident
CJ Das MD,
DNB,
Assistant Professor
Saurabh Kumar MD Senior Resident
K.
Rangarajan MBBS,Secondyear Junior Resident
S Sharma MD,
Additional Professor
AK Gupta MD,
Professor and Head
Department of Radiodiagnosis,
All India Institute of Medical Sciences ,
New Delhi