. Surgery, its principles and practice . Fig. 174.—Congenital Diverticulum in theBladder Wall (Nitze).The smooth round edges, us well as thebottom of the cavity, are plainly evident, asdistinguished from, the acquired form of diver-ticula; no other sacculations appear in thewall of the bladder. Fig. 175. - Dilated Ureter and UreteralOpening (Fenwick). cystoscope is the means, par excel-lence, for disclosing both sacculationand stone (Figs. 173, 175). It is common to observe sacculations of variable number and size inmaking cystoscopic investigation of prostatic cases. Although there is little


. Surgery, its principles and practice . Fig. 174.—Congenital Diverticulum in theBladder Wall (Nitze).The smooth round edges, us well as thebottom of the cavity, are plainly evident, asdistinguished from, the acquired form of diver-ticula; no other sacculations appear in thewall of the bladder. Fig. 175. - Dilated Ureter and UreteralOpening (Fenwick). cystoscope is the means, par excel-lence, for disclosing both sacculationand stone (Figs. 173, 175). It is common to observe sacculations of variable number and size inmaking cystoscopic investigation of prostatic cases. Although there is little contractility in the walls of diverticula, whichpractically consist of nothing but overstretched mucous membrane, still,when the obstructive condition that has caused it is removed, gradualshrinking or even disappearance of the sac-culation often ensues. A very large diver-ticulum that had probably existed for anumber of years, in a case under my ownobservation, was seen to follow this courseafter the removal of neurotic obstructionat


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