Читать книгу Bovine Reproduction - Группа авторов - Страница 243

Erection and maintenance of the normal penile form is dependent on complete distension of the unobstructed cavernous spaces with blood under pressure. If the cavernous spaces are blocked sufficiently to prevent blood from completely filling the CCP, engorgement of the penis can only progress from the proximal portion of the penis to the area of the filling defect [40]. The clinical presentation depends on the location of the obstruction. Complete obstruction of portions of the CCP may result in extension of the penis without erection of the portions distal to the blockage (Figure 15.23). Partial blockade of the cavernous spaces in the distal free portion of the penis may sometimes cause the erect penis to deviate ventrally or laterally.

Figure 15.23 Failure of the distal portion of the penis to become erect due to occlusion of the cavernous spaces of the corpus cavernosum penis.

Cavernosography can demonstrate filling defects in portions of the penis located distal to the sigmoid flexure. Filling defects may be congenital, secondary to fibrosis following trauma, or subsequent to cavernositis.