Volume 20, Number 1Case ReviewA Potential Link: Cross-fused Renal Ectopia With Concomitant Absent Left TesticleBryant Van LeeuwenDavid W DrevnaJoseph DankoffCross-fused renal ectopia (CFRE) is a rare congenital anomaly in which both kidneys are located on a unilateral side of the retroperitoneal space. The ureter of the ectopic kidney is seen to pass over the midline to insert in its normal anatomic position. Frequently this anomaly goes undetected until there is radiologic screening for other purposes or when other genitourinary issues are investigated. Although frequently isolated, this condition has been reported to be associated with other congenital anomalies, genetic disorders, and various urogenital anomalies more than 50% of the time. However, we found no cases linking CFRE with a solitary testicle. This is a case of a 30-year-old man with left-to-right CFRE with concomitant absent left testicle and obstructing distal calculus. [Rev Urol. 2018;20(1):49–51 doi: 10.3909/riu0770] © 2018 MedReviews, LLC®Cross-fused renal ectopiaCFRE
Volume 21, Number 1Case ReviewSymptomatic Rosai-Dorfman Disease Presenting as Isolated Bilateral Perinephric InfiltrationBryant Van LeeuwenDaniel J KmetzDennis BentleyThis case explores a rare initial presentation of Rosai-Dorfman disease isolated to the peri-renal space. Also described as sinus histiocytosis with massive lymphadenopathy, Rosai-Dorfman disease is non-neoplastic and most often presents with massive cervical lymphadenopathy, but the disease can affect any organ system. Not often considered by those in the urology community or found in urology journals, this report reviews a clinical presentation of Rosai-Dorfman disease affecting bilateral kidneys and the fundamental histopathology needed for its diagnosis. [Rev Urol. 2019;21(1):41–44] © 2019 MedReviews®, LLCRosai-Dorfman diseaseSinus histiocytosis with massive lymphadenopathy