Macro-microscopic examination of the valves of the deep dorsal vein of the human penis

Abstract

Objective to study the valves of the deep dorsal vein of the human penis.
 Material and methods. The study of deep dorsal vein valves in 150 men was carried out using macroscopic and microscopic methods. The work was performed on autopsy material. 47 trunks of the deep dorsal vein isolated using magnifying optics х3,5 from the coronal sulcus to the prostatic venous plexus and 103 fragments of the vein in cross section directly distal to the supporting ligament were studied. We used histological painting coloring with hematoxylin-eosin, funcionam with fuchsin and Mallory. The obtained images of valves in longitudinal and cross sections were subjected to photoregistration and archiving for further detailed study and analysis.
 Results. As a rule, the studied vein has one trunk, but in 7,3% of cases it is represented by 2 trunks. Most often there is a division of the main trunk of the vein. Valves of the deep dorsal vein in the longitudinal section are detected in 89% of observations. On the cross-section, the valve in 36% of cases is detected near the supporting ligament. Valves are represented most often by 2 flaps, at the base of which there is a roller associated with the middle shell of the vein wall. The valves of the deep dorsal vein of the penis have the typical appearance of "pocket" type valves and do not prevent the outflow of venous blood from the cavernous bodies, blocking retrograde blood flow.
 Conclusions. Valves are a constant component of the deep dorsal vein of the human penis. The structure of the valves indicates that they prevent retrograde blood flow to the cavernous bodies, both at rest and during erection.