pubic vein
http://purl.obolibrary.org/obo/UBERON_0039256
vein ascending the posterior aspect of the body of the pubis to drain into the inferior epigastric vein; this vein frequently (about 20% of patients) serves as an accessory or replaced obturator vein. [ https://medical-dictionary.thefreedictionary.com/pubic+vein ]
Synonyms: pubic branch of inferior epigastric vein, pubic branch, accessory obturator vein