鄭海倫R.F. Chen; T.U. Tsai; Hellen Jeng2026-05-212026-05-212007https://203.71.86.71/handle/123456789/20650We report an anatomic variation of the phrenic nerve. During a routine gross anatomical dissection course at our medical university, we found an unusual loop of the left phrenic nerve around the internal thoracic artery, about 1 cm from the take-off of the left subclavian artery. The phrenic nerve is close to the internal thoracic artery and is easily injured when dissecting the internal thoracic artery for coronary artery bypass conduit. Therefore, we suggest that the anatomic relationship of the phrenic nerve and internal thoracic artery is important in preventing incidental injury of the phrenic nerve.en-US學科：解剖學暨細胞生物學科期刊論文article