Benign Urothelium : Lamina Propria
Section Editor: Dharam M. Ramnani, MD
Virginia Urology, Richmond, VA, USA
Image Description
Higher power view of muscularis mucosa. Note the haphazard arrangement of the thin muscle bundles. In contrast, the muscle fibers of muscularis propria (detrusor muscle) are organized in thick bundles. In small specimens, the distinction between muscularis mucosa and muscularis propria may be extremely difficult.