canal n. 1.運河;溝渠,水道。 2.【建筑】溝;【解剖學】管,道。 3.【天文學】火星表面的運河狀細長溝紋。 the alimentary canal消化管。 the Suez C- 蘇伊士運河。 the C- Zone 巴拿馬運河區。 vt. (-l(l)-), 在…開運河;在…開溝,疏導。
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 除了特別的注意這些部位外,開放腔或開放后再封閉的手術法,由外而內的將外耳道先行擴大以充分露出術野,大型膽脂瘤囊袋內容物先取出再予剝離,講求顏面神經嵴削低的技巧,以及對小兒例的警戒心,術中出血的控制和照明的良好等,均為防止膽脂瘤殘留的要訣。