lateral costal branch of internal thoracic artery

lat·er·al cos·tal branch of in·ter·nal tho·rac·ic ar·ter·y

[TA] a variable branch of internal thoracic artery that runs lateral and parallel to the internal thoracic artery on the deep surface of the rib cage; anastomosis: posterior intercostal arteries. Synonym(s): ramus costalis lateralis arteriae thoracicae internae [TA]