RT Journal Article SR Electronic T1 A teratoid cyst containing nephrogenic tissue in a woman with a horseshoe kidney JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 876 OP 878 DO 10.1136/jcp.2004.021782 VO 58 IS 8 A1 Stewart, G D A1 Bariol, S V A1 Grigor, K M A1 Tolley, D A YR 2005 UL http://jcp.bmj.com/content/58/8/876.abstract AB A 21 year old woman presenting with flank pain and vomiting was found to have a cystic lesion associated with a horseshoe kidney. The inner aspect of the cyst wall consisted of connective tissue intermingled with colonic-type epithelium. Within the cyst wall there were multiple foci of immature and incompletely differentiated renal elements, together with fragments of urothelium, smooth muscle, bone, and neuroendocrine tissue. No immature renal blastema were found. This lesion is unique and labelled as a teratoid cyst containing nephrogenic tissue.