Figure 1

Site-dependent difference in Denonvilliers’ fascia in horizontal sections from a 90-year-old man. Panel A(F) displays the most superior (inferior) level in the figure. Intervals between panels are 3 mm (A–B), 13 mm (B–C), 11 mm (C–D, D–E), and 6 mm (E–F). Denonvilliers’ fascia (DF) shows a multiple-leaf configuration at all levels and sites. In the midsagittal areas (circle with “mid”), the fascia is unclear or fragmented in panels A, B, and D, while in the parasagittal areas (circle with “para”), DF is most evident in panels B, C, and E. The fascia thus appears more clearly identifiable in the lateral sites than in medial sites. The site more lateral to this figure is shown in Figure  2 C (near panel B) and Figure  2 D (near panel E). All panels were prepared at the same magnification (scale bar is in panel A). BL; bladder; ED: ejaculatory duct; PR: prostate; PU: prostatic utricle; REC: rectum; SV: seminal vesicle; UR: urethra.