278 PEiNorPLES or yetebinaby subgeby 



the process may possibly spread to the surrounding connect 

 tive tissue and an abscess follows. In these cases where 

 neither absorption nor abscess formation take place, a chronic 

 lymphadenitis is the result. 



Describe purulent lymphadenitis. 



The infectious agent is of suflBcient intensity to entail 

 suppuration; almost invariably the surrounding connective 

 tissue is involved in the inflammatory and suppurative pro- 

 cess; the pus cavity thus formed rests in the connective tissue 

 which encloses the more or less destroyed gland. In this 

 form of adenitis the gland at first swells decidedly and is very 

 painful, fluctuation appearing in due time, the pus being dis- 

 charged either into the external world, or is absorbed, giving 

 rise to septicemia or pyemia, or becomes inspissated. The 

 most common example of purulent lymphadenitis is the strep- 

 tococcus distemper of the horse. 



Describe chronic interstitial lymphadenitis. 



In this form of adenitis the interstitial connective tissue 

 of the gland is- primarily involved, as a result of which the 

 gland becomes hard and nodular, often forming adhesions 

 with the adjacent structures. Such a gland is not painful. 

 As a rule, this chronic form is the result of an invasion of 

 the gland with specific germs, as those of glanders, tubercu- 

 losis, but also accompanies chronic catarrhs of the upper 

 respiratory tract. 



Outline the treatment of lymphadenitis. 



The parenchymatous form is best treated with moist heat 

 and later with absorbents; the purulent form needs moist heat 

 or a stimulating blister until the abscess can be opened, which 

 is then given an antiseptic treatment. The chronic form is 

 practically incurable. 



