Читать книгу Ridley's The Vulva - Группа авторов - Страница 84

The venous drainage follows the same pathways and eventually reaches the femoral and internal iliac veins. The internal iliac veins drain a rich venous plexus in the pelvic floor, which contributes to draining all the pelvic viscera. The venous drainage of the terminal gastrointestinal tract is therefore partially to the pelvic plexus but principally to the portal system via the superior rectal and thence the inferior mesenteric vein. The pelvic venous plexus therefore provides a portal systemic anastomosis, and portal hypertension can predispose to distension and even thrombosis of the pelvic, rectal, vaginal, and vulval veins.