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the turning inside out of an organ, such as the urinary bladder.
exstrophy of the bladder congenital absence of a portion of the abdominal wall and bladder wall, the bladder appearing to be turned inside out, with the internal surface of its posterior wall showing through the opening in the anterior wall.
exstrophy of cloaca (cloacal exstrophy) a developmental anomaly in which two segments of bladder (hemibladders) are separated by an area of intestine with a mucosal surface, resembling a large red tumor in the midline of the lower abdomen.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.