glandula:r carcinomata. 



189 



may even take on an exuberant development. Some cancers 

 there are however — and these may rightly be termed telengiec- 

 tatic — in which the development of vessels predominates from 

 the very first. In a cancer of the testicle whose growth was 

 extremely rapid, I found the stroma wholly made up of vascular 

 ramifications. Fig. 59 represents a fragment of this stroma. I 

 regard the double contour which may everywhere be traced at a 

 little distance from the vessels, as the wall of a lymphatic 

 sheath; such perivascular sheaths having been discovered by 

 Ludwig and Tomsa even in the normal testicle. Here too I had 



Fig. 59. 



Stroma of a rapidly-growing cancer of the testicle. The section 

 has been pencilled out. 3^. 



an admirable opportunity of studying the development of vessels 

 from " coecal protrusions" as described by Rokitanski; and I 

 was enabled to assure myself that these protrusions were strictly 

 equivalent to those coecal appendages of the vascular system with 

 which we became acquainted in connexion with tertiary vas- 

 cularisation (§ 71). The protrusions, which are undoubtedly 

 coecal, grow towards each other and coalesce when they come 

 into contact, forming a new capillary loop (fig. 60). 



All telengiectatic cancers are clearly recognisable even by the 

 unaided eye, owing to the frequency with which parenchymatous 

 hagmorrhages occur in their interior. Haemorrhagic foci, varying 

 in size from a pin's head to a hen's egg, and even larger, foci 

 in every stage of retrograde metamorphosis, blood-cysts and 

 patches of pigment of all shapes and sizes, characterise the cut 

 surface of this variety of fungus haematodes. As regards malig- 



