THE THORACrC AND ABDOMINAL WALLS 165 



confined to the pelvic region, or within a few inches of an 

 operation or accidental wound, there is always more hope 

 than with the diffused variety. 



Tumours of the Abdominal Wall and Mammary Glands. 



Tumours of the exterior of the abdomen are very common, 

 especially in the region of the mammary gland, and frequently 

 they attain an enormous size. The chief varieties are those 

 of sarcoma or adenoma, but osteoma, chondroma, fibroma, 

 and carcinoma are also seen ; and one must not forget that 

 in a bitch whose milk has been allowed to accumulate and 



Fig. 124. — A Bitch with large Mammary Tumours.^ 



remain in the mamma, indurated portions of gland, which 

 feel very like tumour tissue, are met with. 



The Treatment is the same as for tumours in other parts of 

 the body (see p. 74), and one must not forget that, as a rule, 

 mammary tumours are very muscular, so that particular 

 attention must be paid to avoid hemorrhage by taking up 

 the vessels as they appear. 



In making a diagnosis one must bear in mind the similarity 

 in appearance in some cases (Figs. 146 and 147) of mammary 

 tumours and inguinal hernia, so that an operation should not 

 be undertaken until after a very careful examination. 



1 For this photograph I am indebted to Mr. A. S. Hodgkins. 



