10 



MASS. EXPERIMENT STATION BULLETIN 391 



Table 5. — Frequency of Organ Involvement with Lymphocytoma. 



Figures represent percent of cases in which the respective organs or tissues were 

 involved. Cases are grouped twice: according to form of tumor and on the basis 

 of nerve involvement. Figures in parentheses are number of cases in group. 



Form of Tumor 



Organs or 



Tissues 



Involved 



Diffuse 



(118) 



Diffuse 

 Nodular and 

 Nodular 

 (20) (75) 



Nerve Involvement 



No 



Nerves Nerves 



Involved Involved 

 (130) (83) 



Total 

 (213) 



Liver 37.3 



Spleen 22.9 



Kidney 47 . 5 



Gonad 53 . 4 



Marrow 11.9 



Lung 17.8 



Peritoneum 32 . 2 



Skin and Subcutis 9.3 



Musculature 10.2 



Thymus 4.2 



Adrenal 28.0 



Heart 11.9 



Pancreas 11.0 



Intestine 17.8 



Bursa of Fabricius 6.7 



Proventriculus 5.9 



Thyroid 3.4 



Parathyroid 1.7 



Oviduct 2.5 



Blood 22.9 



Nerves — 



Anterior mesenteric. ... — 



Brachial — 



Lumbar — 



Ischiadic — 



Vagus — 



of Remak — 



90 

 85.0 

 40.0 

 30.0 

 30.0 

 5.0 

 15.0 



5.0 

 20.0 



10.0 



72.0 



65 5 



58.7 



57.4 



29.3 



25.3 



30.7 



8.0 



8.0 



8.0 



37.4 



12.0 



17.3 



26.7 



16.0 



20.0 



6 7 



2.7 



21.4 



70.7 



56.1 



55.4 



50.8 



25.4 



15.4 



23.8 



4.6 



4.6 



6.1 



19.2 



9.2 



10.7 



19.2 



15.4 



7.7 



2.3 



24.6 



30.1 



24.1 



43.4 



55.5 



10.8 



25.3 



33.8 



13.3 



14.5 



3.6 



44.6 



14.5 



14.5 



20.5 



4.8 



14.5 



7.2 



4.8 



2.4 



15.7 



60.2 

 56.6 

 51.8 

 27.8 

 27.8 

 24.1 



54.5 



43.6 



50.7 



52.5 



19.7 



19.3 



30.0 



8.0 



8.4 



5.2 



29.1 



11.3 



12.2 



19.7 



11.3 



10.3 



4.7 



1.9 



1.4 



21.1 



23.4 

 22.0 

 20.2 

 10.8 

 10.8 

 9.4 



The disease was found to involve more organs or tissues when diffuse or nodular 

 and diffuse in character. Nodular lymphocytoma was usually confined to few 

 organs (Table 6).- Lymphocytoma was confined to only four or less organs 

 (exclusive of the various nerves and blood) in 61.9 percent of the 213 cases studied. 

 The extent of lymphocytoma was about the same irrespective of whether or not 

 nerves were involved, when the nerve tissue itself was left out of consideration. 



The different combinations of organs or tissues that might be affected with 

 lymphocytoma were studied. In this study involved nerves and blood were 

 excluded. Actually 152 such combinations were found. As mentioned above, 

 the liver, spleen, kidney, and gonad were the organs most frequently affected 

 with lymphocytoma, and there were only 28 of the 213 cases in which none of 

 these four organs was involved. Of these 28 cases, 25 were dift'use lymphocytoma 

 (representing 21.2 percent of the group of 118 cases of dift'use lymphocytoma) 



