Perinephric fluid collection post renal transplant

Perinephric fluid collections are commonly seen after renal transplantation. The appearance of a perinephric fluid collection is often nonspecific, and generating a differential often relies on when the transplant occurred.

Radiographic features

Early post-transplant period
  • haematoma
    • ultrasound probably has limited sensitivity, and often underestimates haematoma volume when present 3
    • decrease in haemoglobin level may be more sensitive 3
  • seroma
  • urinoma: mean time of onset is 45 days
Late post-transplant period
  • lymphocoele: 4-8 weeks post surgery, but may occur as far out as 6 months
  • abscess

Although division of fluid collections into early and late can be useful to generate a differential diagnosis, collections that occur in the early post-transplant period may also occur in the late post-transplant period. If clinically necessary, a definitive diagnosis often requires percutaneous aspiration and fluid analysis.

Share article

Article information

rID: 36934
System: Urogenital
Section: Gamuts
Synonyms or Alternate Spellings:
  • Perinephric fluid collections
  • Renal transplant fluid collection
  • Renal transplant fluid collections
  • Peri-renal fluid collection
  • Peri-renal fluid collections

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1: lymphocoele
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.