566 



THE DIGESTIVE SYSTEM. 



Polypoid Growths, projecting into the cavity of the intestine and com- 

 posed of connective tissue and covered with epithelium, are frequently 

 found (Fig. 342). They are associated with catarrhal inflammation or 

 occur by themselves. They are found throughout the intestinal tract and 

 may be single or multiple. They grow 

 from the submucous coat and project in- 

 ward. Some of them are solid connective- 

 tissue tumors, covered by the mucous mem- 

 brane which they have pushed inward. 

 Others are of the same character, but of 

 large size. In others the connective tissue 

 is arranged in branching tufts, covered 

 with cylindrical epithelium; and in these 

 last tumors there may also be tubules lined 

 with cylindrical epithelium, giving to the 

 growth the characters of an adenoma. 



Lymphoma. Growths of tissue somewhat 

 resembling that of the lymphatic tissue of 

 the lymph-nodes may originate in the soli- 

 tary and agniiuated nodules, and in the in- 

 testinal wall in cases of leukaemia and 

 pseudo-leukemia (Fig. 343). 



Similar growths are found as indepen- 

 dent lesions both in the large and small in- 

 testines. These are irregular, diffuse growths 

 infiltrating the wall of the intestine, the mes- 

 entery, and the neighboring lymph-nodules, and may reach a consider- 

 able size. They often ulcerate internally and may lead to dilatation or 

 stenosis of the intestine. The classification of such tumors is difficult 



FIG. 342. SMALL POLYP OP 

 THE Mucous MEMBRANE OF THE 

 SMALL INTESTINE. 



FIG. 343." LYMPHOMATA " OF THE INTESTINE IN PSEUDO-LEUKEMIA HODGKIN'S DISEASE. 



The growths are polypoid, many are pigmented, and they were in this case widely distributed over the 



intestinal mucosa. 



and it is often doubtful whether they should be grouped with the sar- 

 coma or the so-called lymphoina. 



Sarcomata are of occasional occurrence in the intestine. They appear 



