Oviductal lymphatics and their relations with the paraovarian lymphatic plexus in the pig

The lymphatic vessels emanating from the oviductal infundibulum, ampulla and isthmus were examined in the pig paraovarian sac and broad ligament walls to determine their relations with paraovarian lymphatic plexus. To differentiate the oviductal, ovarian and uterine lymphatic pathways injections of the three-coloured microfil were used. The precollector lymphatics in the paraovarian sac mesosalpinx created two networks running independently pathways towards the lymph nodes. A large multimesh network from the oviductal isthmus, especially in the late follicular and early luteal phases, together with uterine precollectors made the lymphatic plexus in subovarian areas. Both of these lymphatic networks did not possess direct connections for the lymph flow. The lymphatic system in the supraovarian sac was not evident scanty.