canal n. 1.运河;沟渠,水道。 2.【建筑】沟;【解剖学】管,道。 3.【天文学】火星表面的运河状细长沟纹。 the alimentary canal消化管。 the Suez C- 苏伊士运河。 the C- Zone 巴拿马运河区。 vt. (-l(l)-), 在…开运河;在…开沟,疏导。
Other than paying attension to these areas during the operation , the author believes there are several points for the effective removal of cholesteatoma : 1 ) use of open or open - closed method for mastoidectomy ; 2 ) incision made over some safe site on the cholestratoma sac to remove its content beforehand , which will fascilitate the elevation of matrix after wards : 3 ) exposure of the fallopian canal in the tympanic cavity before lowering down the facial ridge ; 4 ) care be taken of pediatric cholesteatoma ; 5 ) good control of blood pressure and bleeding during the operation ; and 6 ) illumination 除了特别的注意这些部位外,开放腔或开放后再封闭的手术法,由外而内的将外耳道先行扩大以充分露出术野,大型胆脂瘤囊袋内容物先取出再予剥离,讲求颜面神经嵴削低的技巧,以及对小儿例的警戒心,术中出血的控制和照明的良好等,均为防止胆脂瘤残留的要诀。