Objectives: We report our experience in the management of 147 hydatid cysts of the kidney over an 11–year period.Material and Methods: The records of 147 patients operated for hydatid cysts of the kidney between 1985 and 1996 were reviewed in order to address patient’s symptoms at presentation, radiological findings, diagnostic tests and surgical outcome. All patients were managed with open surgery. No preoperative or postoperative antiparasitic medication was used.Results: Lumbar or lumbo–abdominal pain was the most frequent symptom (84%). Hydaturia was observed in 28% of the cases. Preoperative diagnosis was based upon intravenous pyelography (IVP), ultrasound and serology tests. CT scan was performed only in litigating cases (15%). In 20 cases, damage to the renal parenchyma was so extensive as to justify nephrectomy. Abstention concerned 5 involutive type V cysts. The remaining patients had an excision of the prominent part of the cyst (partial cystopericystectomy). Postoperative course was smooth in all cases. Postoperative IVP (3–6 months) showed a restituo ad integrum in 80% of the cases and residual pelvicaliceal distortions in 20%.Conclusions: Diagnosis of hydatid cyst of the kidney is based mainly on ultrasonography and IVP. Open surgery is the treatment of choice with excellent results.

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