330 DISEASES OF THE CIRCULATORY SYSTEM. 



FIG. 145. 



Aneurism of the ascending aorta (woman, agred 30). A, aorta ; B, orifice of commu- 

 nication ; C, aneurismal sac; D, rib adherent to the sac; E, shrunken aortic 

 valves (Ziegler). 



PHLEBITIS. 



Acute inflammation of a vein occurs either in connection 

 with the formation of a thrombus thrombophlebitis, or is 

 associated with an inflammatory process in surrounding tis- 

 sues, which may produce thrombosis also, secondarily. 



