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 but may be partially differentiated by when the transplant occurred.

Radiographic features

Early post-transplant period (<4 weeks)
  • hematoma
    • ultrasound probably has limited sensitivity, and often underestimates hematoma volume when present 3
    • decrease in hemoglobin level may be more sensitive 3
  • seroma
  • urinoma
Late post-transplant period (>4 weeks)
  • lymphocele: 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.

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

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Cases and figures

  • Case 1: lymphocoele
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