title: Perirenal tailgut cyst (cystic hamartoma).
abstract: Tailgut cysts are rare congenital multicystic lesions preferentially occurring in the retrorectal space. They are assumed to arise from the remnant of embryonic tailgut and occasionally exhibit malignant transformation. The authors herein describe the clinical, radiologic, and pathologic features of an unusual perirenal tailgut cyst with an emphasis on its histogenesis and distinction from other intraabdominal cystic lesions.
authors.affiliation: Department of Pathology, Chang Gung Memory Hospital, Kaohsiung Medical Center, Chang Gung University, Taiwan, China.
authors.forename: Ming-Tse
authors.initials: MT
authors.lastname: Sung
authors.forename: Sheung-Fat
authors.initials: SF
authors.lastname: Ko
authors.forename: Chen-Kuang
authors.initials: CK
authors.lastname: Niu
authors.forename: Chih-Sung
authors.initials: CS
authors.lastname: Hsieh
authors.forename: Hsuan-Ying
authors.initials: HY
authors.lastname: Huang
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D002648:Child; D003560:Cysts / Q000151:congenital* / Q000175:diagnosis; D006222:Hamartoma / Q000151:congenital* / Q000175:diagnosis; D006801:Humans; D007668:Kidney / Q000196:embryology; D007674:Kidney Diseases / Q000151:congenital* / Q000175:diagnosis; D008297:Male; D012007:Rectum / Q000196:embryology; D012445:Sacrococcygeal Region