Henry Gray (18251861). Anatomy of the Human Body. 1918.
1. The Superior Gluteal Veins (vv. glutaeæ superiores; gluteal veins) are venæ comitantes of the superior gluteal artery; they receive tributaries from the buttock corresponding with the branches of the artery, and enter the pelvis through the greater sciatic foramen, above the Piriformis, and frequently unite before ending in the hypogastric vein.
FIG. 585 The veins of the right half of the male pelvis. (Spalteholz). (See enlarged image)
2. The Inferior Gluteal Veins (vv. glutaeæ inferiores; sciatic veins), or venæ comitantes of the inferior gluteal artery, begin on the upper part of the back of the thigh, where they anastomose with the medial femoral circumflex and first perforating veins. They enter the pelvis through the lower part of the greater sciatic foramen and join to form a single stem which opens into the lower part of the hypogastric vein.
3. The Internal Pudendal Veins (internal pudic veins) are the venæ comitantes of the internal pudendal artery. They begin in the deep veins of the penis which issue from the corpus cavernosum penis, accompany the internal pudendal artery, and unite to form a single vessel, which ends in the hypogastric vein. They receive the veins from the urethral bulb, and the perineal and inferior hemorrhoidal veins.