posterior wall的用法和樣例：
例句
- We presented a 46 years old woman with posterior wall RVF after the rectal cancer surgery.
我們在此提出一位四十六歲女性，在經(jīng)過(guò)直腸癌手術(shù)之后，發(fā)現有直腸陰道后壁瘺管。 - Echocardiography demonstrated a mass attached to the posterior left atrial wall protruding into the mitral orifice during diastole.
心臟超音波影像可見(jiàn)腫瘤依附左心房后壁，于舒張期阻塞二尖瓣開(kāi)口突入左心室。
