Crossed renal ectopia is a rare congenital anomaly of the urinary tract, with an incidence of about one in 2000-7000 autopsies and a slight male predominance.是什么意思_Crossed renal ectopia is a rare congenital anomaly of the urinary tract, with an incidence of about one in 2000-7000 autopsies and a slight male predominance.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句