West Virginia Department of Education

radi/o (ray, radiation) radiology, the use of ionizing radiation in diagnosis and treatment. re- (back, against, contrary) recurrence, the return of symptoms after remission. rect/o (rectum) rectal, pertaining to the rectum. ren/o (the kidneys) renal, pertaining to the kidneys. retro- (located behind, backward) retroperineal, behind the perineum. ................
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