Histological examination of the polyp confirmed the diagnosis of fibromyxoid NA because of pseudovascular tubular structures that were immunostained with ceratine 7, panceratine, PAX-2 and PAX-8 (Figure 2).
Our both cases were tubular structured and the bladder case was PAX-2-positive and urethral case was immune-stained additionally with PAX-8, ceratine 7 and panceratine.