Abstract
Hydatid cyst is a parasitic infestation. It most commonly involves the liver, followed by the lungs. The kidney is rarely involved. Characteristically, it presents as a multiloculated cyst with daughter cyst(s) on imaging. We present a case diagnosed as simple renal cyst found to be a hydatid cyst on exploration. A 50-year-old woman presented with right flank pain without hematuria or lower urinary tract symptoms (LUTS) for 6 months duration. On ultrasonography, a 6 cm × 7 cm simple cyst at the parapelvic location with hydronephrosis was found. Contrast-enhanced computed tomography kidney, uterus, bladder (CECT KUB) showed a large noncommunicating cyst of dimension 79.3 mm × 63.6 mm × 62.8 mm with a thin smooth wall compressing the pelvis, causing hydronephrosis. On exploration, a daughter cyst within the hydatid cyst was found. All of the fluid was drained, and then the ectocyst was removed. There was no communication between the cysts and the pelvicalyceal system.
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