Case Report: PDF OnlyNephrogenic Adenoma Arising in a Renal Cortical CystChiu, Yi-Chuna; Chang, Yen-Hwaa, *; Pan, Chin-Chenb; Chen, Kuang-KuoaAuthor Information aDivision of Urology, Department of Surgery, and Department of Urology, National Yang-Ming University School of Medicine, Taipei, Taiwan, R.O.C. bDepartment of Pathology, Taipei Veterans General Hospital, National Yang-Ming University School of Medicine, Taipei, Taiwan, R.O.C. *Correspondence to: Dr. Yen-Hwa Chang, Division of Urology, Department of Surgery, Taipei Veterans General Hospital, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan, R.O.C. E-mail: [email protected] Received: September 9, 2004 • Accepted: March 1, 2005 Journal of the Chinese Medical Association: September 2005 - Volume 68 - Issue 9 - p 444-446 doi: 10.1016/S1726-4901(09)70163-7 Metrics Abstract Nephrogenic adenoma is an unusual lesion of the urinary tract first described by Davis in 1949 as a hamartoma. In 1950, Friedman and Kuhlenbeck subsequently characterized the lesion in more detail and named it nephrogenic adenoma. It appears to be a metaplastic response of the urothelium elicited by trauma and chronic irritation and is considered to be benign. A MEDLINE search of the literature from 1960 to the present revealed no previous documentation of a nephrogenic adenoma arising from a renal cortical cyst. Herein, we present such a case arising in a renal cortical cyst. © 2005 by Lippincott Williams & Wilkins, Inc.