Figure 4
From: Urethral orifice hyaluronic acid injections: a novel animal model of bladder outlet obstruction
Histological characteristics of injection, operation, and control bladders. There was a significant increase in the thickness of smooth muscle in the bladders of the injection (A) and surgery groups (B) compared with the control group (C). Suburothelium and interstitial hyperemia edema and smooth muscle hypertrophy were found in both injection and surgery bladders. Severe suburothelium inflammation and hyperemia were observed in the surgery group but not in the injection group.