A manual of operative surgery . the skin over it freely. On its deep aspect the breastlies closely on the pectoral fascia, in which a cellular interspaceallows of lateral mobility and also facilitates the detachment ofthe breast during the operation from the chest wall. It shouldbe noted that this interspace in the fascia (see n, 12, and 13 inthe figure) is freely supplied with lymphatic vessels, which com-municate with those of the breast. Hence in the operation itis best to remove the whole of this fascia with the underlyingpectoral muscle. If the whole thickness of the muscle be not removed
A manual of operative surgery . the skin over it freely. On its deep aspect the breastlies closely on the pectoral fascia, in which a cellular interspaceallows of lateral mobility and also facilitates the detachment ofthe breast during the operation from the chest wall. It shouldbe noted that this interspace in the fascia (see n, 12, and 13 inthe figure) is freely supplied with lymphatic vessels, which com-municate with those of the breast. Hence in the operation itis best to remove the whole of this fascia with the underlyingpectoral muscle. If the whole thickness of the muscle be not removed, at leastthe surface fibres should be, so as to make sure of excising thefascia and the lymphatics in it. The breast is supplied by the following arteries, which aredivided in excision of the gland, viz. the second, third, fourth, andfifth intercostal branches of the internal mammary (see Fig. 310,Nos. 1, i, 1). Of these, the branch coming through the thirdinterspace is often of comparatively large size. All these vessels LU I <N 0<0 I en £ o. h D O < LL S O 5 2 * O ^ I- •* o S < fe. lu lu <o 2 -!l=s • Z Q Z. LU Z a)3uJS> o: i_ 5E --: z°z?>z< °- — ~ m ._? v °- | O- Ul£< Ul 5- 3 p. Q ui § _ < O ?, < CC LU J 2 S 5 S < ° x n-1-1-2 5 5 So5 3- < < ™ , X < J z zLL < S O CC <O . O uj wit i- J3 o o O T ui .£ CC LL l a. cc uj lu co lu <2 lu JfflijU z - LU < <£ a, I , -lie o ^ j I- W O - i I -si0- .So :o H ° Z O - - 5 n to o W !c?2 o z CC (0 , < 3 d -J. Z D LU : CO I- U. ? O < CO < - S O CO O 0 rc uj £. ccD OO I CC r-O 5?foz5 SctH»o^ w z s it S °cc^Q ,i D E LU m UJ „• CC > CO ,„ -I Q < cc 3 LU 0 _| ui -h[0SxZ <„;Z . UJ z
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