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urinoma
Etiology:
- blunt trauma
- extravasation of urine is common with severe blunt trauma
- spontaneous occurs in most cases
- urinoma formation occurs uncommonly
- ureteral obstruction due to
- cancer
- urinary calculus
- pregnancy
- congenital anomaly
Pathology:
- urine collection in perirenal fat as a result of leakage from the renal pelvis of renal calices
- an inflammatory response with lipolysis results in fibrous encapsulation
Clinical manifestations:
- gradual progression
- pain & pressure depend on size & location
Laboratory:
- renal function tests
Special laboratory:
- image-guided percutaneous needle aspiration is both diagnostic & therapeutic
Radiology:
- renal ultrasound
- computed tomography
- intravenous pyelogram
Complications:
- abscess formation
- peritonitis
- sepsis
- fibrosis
- granuloma formation
Management:
- drainage with CT or ultrasound guidance
- treatment of urinary obstruction
General
urologic disease
References
- Wikipedia: Urinoma
https://en.wikipedia.org/wiki/Urinoma