A novel histologic finding in male patients with bladder outlet obstruction: a possible etiopathogenesis of Marion's disease?

In these 14 cases, the presence of skeletal muscle fibers is frequent and predominant in TURP fragments, which stands in striking contrast to the control group. We consider that presence of skeletal muscle fibers may be related to Marion's disease, thus contributing to explain its etiopathogenesis and the unsuccessful alpha-blocker treatment in these patients.