title: Huge maternal hydronephrosis: a rare complication in pregnancy.
abstract: A huge maternal hydronephrosis is uncommon in pregnancy and might be mistaken as a pelvic mass. A 21-year-old primigravida was noted at 25th week of gestation to have a visible bulging mass on her left flank. The mass was originally mistaken as a large ovarian cyst but later proved to be a huge hydronephrosis. Retrograde insertion of ureteroscope and a ureteric stent failed, so we performed repeated ultrasound-guided needle aspiration to decompress the huge hydronephrosis, which enabled the patient to proceed to a successful term vaginal delivery. Nephrectomy was performed after delivery and proved the diagnosis of congenital ureteropelvic junction obstruction.
authors.affiliation: Department of Obstetrics and Gynaecology, Division of Gynaecologic Endoscopic Surgery, Chang Gung Memorial Hospital, Lin-ko Medical Center, 5 Fu-Hsing Street, Kwei-Shan, 333, Tao-Yuan, Taiwan.
authors.forename: Hsiu-Huei
authors.initials: HH
authors.lastname: Peng
authors.forename: Chin-Jung
authors.initials: CJ
authors.lastname: Wang
authors.forename: Chih-Feng
authors.initials: CF
authors.lastname: Yen
authors.forename: Chien-Chung
authors.initials: CC
authors.lastname: Chou
authors.forename: Chyi-Long
authors.initials: CL
authors.lastname: Lee
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005865:Gestational Age; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D009392:Nephrectomy; D010048:Ovarian Cysts; D011247:Pregnancy; D011248:Pregnancy Complications; D013396:Suction; D014463:Ultrasonography; D014517:Ureteral Obstruction / Q000150:complications / Q000151:congenital