Fig. 3
From: Anorectal anomalies in the male: revisiting the radiological classification
Imperforate anus without fistula. Upper row (a, b, c): distal colostogram of three different cases; asterisk (*) is marking for the first sacral vertebra (S1). Note the different level of rectal termination: a below sacrum; b at the lower end of sacrum; c opposite S4. The lower row (operative pictures at PSARP) (d, e): a longitudinal incision is made through the posterior rectal wall demonstrating the convergence of the rectal mucosa toward a point tightly adherent to the urinary tract anteriorly (arrow) without direct fistulous communication