Lymphatic neovascularization after orchiopexy.

Lymphatic neovascularization after transseptal and ipsilateral orchiopexy was studied in dogs. After the former, massive scrotal and inguinal lymphatic neovasculature developed on the side of the subcutaneous pouch; the lymphatic vessels drained into both right and left superficial inguinal, iliac, and paraaortic lymph nodes. After ipsilateral orchiopexy, neovascularization was confined mainly to the scrotum and inguinal areas of the affected side, although crossing to the opposite inguinal nodes was also seen. In the unoperated animal the lymph of the testicle was partially drained through the lymphatics of the epididymis and vas deferens into the iliac nodes.