RT Journal Article SR Electronic T1 Pelvic retroperitoneal mass in a 36-year-old man JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 429 OP 433 VO 59 IS 4 A2 Meziane, Moulay A. A1 Powers, Cathryn A1 Saltarelli, Matthew G. A1 Beavis, Kathleen Gleason YR 1992 UL http://www.ccjm.org/content/59/4/429.abstract AB