title: Calyceal diverticulum mimicking simple parapelvic cyst: a case report.
abstract: Calyceal diverticulum is a cystic intrarenal cavity lined by nonsecretory transitional epithelium that communicates with the collecting system via a narrow isthmus or infundibulum. It is a rare anatomic anomaly with an incidence of 0.2% to 0.6% in the patients undergoing renal imaging.1 Single imaging modality usually cannot differentiate calyceal diverticulum from other cystic renal diseases.2 Here, we report a 60-year-old male who was reliably diagnosed with calyceal diverticulum by retrograde urography combined with non-enhanced computed tomography (CT) and magnetic resonance urography (MRU).
authors.affiliation: Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
authors.forename: Yong-han
authors.initials: YH
authors.lastname: Peng
authors.affiliation: Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
authors.forename: Xiao-feng
authors.initials: XF
authors.lastname: Gao
authors.affiliation: Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
authors.forename: Ying-hao
authors.initials: YH
authors.lastname: Sun
mesh_terms: D003560:Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed