Large complicated lymphocele due to renal transplant

Case contributed by Mohammad Taghi Niknejad
Diagnosis almost certain

Presentation

Renal transplant about 20 days ago.

Patient Data

Age: 25 years
Gender: Female
This study is a stack
Axial
non-contrast
This study is a stack
Coronal
non-contrast
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Info

Non-contrast CT scan shows large hypoattenuating collections with thin septations compressing renal graft. A post-transplant ureteric stent is well visualized with the distal end in an empty bladder, displaced by the sizable pelvic lymphocele. 

Case Discussion

Perinephric fluid collections complicating a renal transplant are caused by :

  • lymphocele:  most common, occurring within 2 to 3 weeks after transplant
  • urinoma: can occur at any time due to an anastomotic leak
  • hematoma: higher CT density
  • abscess: may contain gas

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