Figure 3
Lesion characteristics under microscope. (A), and (B) High-power magnification photomicrographs of the bladder showing proliferating myofibroblasts and fibrous tissue of full thickness. Large numbers of lymphocytes, plasmocytes and neutrophils infiltrated the plasma of the bladder, leading to microabscesses (C). (D) Detrusor muscles of the bladder were not collapsed.