Fraley syndrome is the eponymous term for a dilated calyx (hydrocalyx) due to compression of a calyceal infundibulum from an adjacent artery or vein. It is rare, but it occurs more often in an upper pole calyx. The hydrocalyx may be painful.
- 1. Fraley EE. Vascular obstruction of superior infundibulum causing nephralgia. A new syndrome. N. Engl. J. Med. 1966;275 (25): 1403-9. doi:10.1056/NEJM196612222752503 - Pubmed citation
- 2. Zuckier LS, Patel YD, Fine EJ et-al. Fraley's syndrome: case report and update on current diagnostic methods. Urol Radiol. 1988;10 (2): 103-6. Pubmed citation
- 3. Benz G, Willich E. Upper calyx reno-vascular obstruction in children: Fraley's syndrome. Pediatr Radiol. 1984;5 (4): 213-8. Pubmed citation