title: Primary renal hydatid cyst: mis-interpretation as a renal malignancy.
abstract: Primary renal echinococcosis, a rare disease involving the kidney, accounts for 2-3% of human echinococcosis. A 64-year-old female patient from Uzbekistan presented with complaints of left flank pain. A CT scan revealed a cystic mass in the upper to midpole of the left kidney. We regarded this lesion as a renal malignancy and hand-assisted laparoscopic radical nephrectomy was performed to remove the renal mass. The mass consisted of a large unilocular cyst and multiple smaller cysts without any grossly visible renal tissue. The final pathologic diagnosis was a renal hydatid cyst. For patients from endemic areas, hydatid cyst should be included in the differential diagnosis. Here, we present a case of renal hydatid cyst in a female patient who relocated from Uzbekistan to Korea.
authors.affiliation: Department of Urology, Korea University Hospital, Korea University College of Medicine, Seoul 136-705, Korea.
authors.forename: Hoon
authors.initials: H
authors.lastname: Choi
authors.affiliation: Department of Urology, Korea University Hospital, Korea University College of Medicine, Seoul 136-705, Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Park
authors.affiliation: Department of Urology, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul 140-743, Korea.
authors.forename: Jae-Heon
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Urology, Korea University Hospital, Korea University College of Medicine, Seoul 136-705, Korea.
authors.forename: Du Geon
authors.initials: du G
authors.lastname: Moon
authors.affiliation: Department of Urology, Korea University Hospital, Korea University College of Medicine, Seoul 136-705, Korea.
authors.forename: Jeong-Gu
authors.initials: JG
authors.lastname: Lee
authors.affiliation: Department of Urology, Korea University Hospital, Korea University College of Medicine, Seoul 136-705, Korea.
authors.forename: Jae Hyun
authors.initials: JH
authors.lastname: Bae
mesh_terms: D004443:Echinococcosis / Q000175:diagnosis* / Q000469:parasitology / Q000473:pathology*; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000175:diagnosis* / Q000469:parasitology / Q000473:pathology*; D007723:Korea; D010535:Laparoscopy; D008875:Middle Aged; D009392:Nephrectomy; D011860:Radiography, Abdominal; D014057:Tomography, X-Ray Computed; D014610:Uzbekistan
keywords: Echinococcosis; kidney; nephrectomy