PLATP III 



gure 1 Case 1865. Liver with di fuse lymphocytoma. Only a few compressed islands of liver cells remain Th«> 

 se extravascular growth of the tumor is apparent. Magnification X 300. remam. I he 



a"Dsule i^ PviVpn. RTh^fP"^'"*" of anterior mesenteric plexus being intiltrated with lymphocytoma. Penetration of 

 Xn X 35. '''"''■ ^'''■'^"^'s adjacent to the ganglion were affected with di f use lymphocytoma Mag- 



fnes'u nf\}^^r^h^:?r'^ affected with nodular lymphocytoma. No ovarian tissue can be seen in the illustration but only 

 l,Zl ! "V^y^ °"i'V"""^ ^'^''^ surrounded by connective tissue. Magnification X 45. usirui.on. out only 



^PrL^»„i f .K- ^P'^^" showmg a single well-encapsulated focus of neoplastic lymphoid cells. The liver kidnevs 

 peritoneum of this bird vvere also affected with lymphocytoma. Magnification X 180. Kianeys. 



nrPvi,;„cV^**' .u'"u?'j''"^'* and both brachial plexuses of a bird which had paralysis of the right wing. For twelve 



>VJ^.. 1 "ecropsy the bird was unable to stand and sat on its hocks, with symptoms of a transverse mveli is The rTcht 

 c Ipl?n ^'^ "^^'^ markedly atrophic. The bird was nearly dead when killed for necropsy MacrSpic and mkrol 

 will Tn?.n'^?.l^.T'^"^'* '" '^^ "^^' brachial nerve plexus and radicals which were affected byThes^XgrnusHted 

 was'not tncTudld ilTfhP ^^ ^^^rHJ^^ed of neoplastic lymphoid cells indistinguishable from those of lymphocytoma This 

 serves as in Pv.pn f ^ "" ?^ 'v^Phocytomas since it failed to meet the criterion of involving tissue other than nerve- 

 _ serves as an excellent example of what may be regarded as lymphocytoma originating in nerve ti.ssue. 

 Jeer. ?lp<t;,t L K ■ f.uf^ sec ion of spnal cord from region indicated by inked line in Figure 5. Much of the cord 



Und vemril nervVna h? The^m'^rrpT'^'V' 'r"^?'^ """.• '^^^ L"^'^^'°" P^"'^^^''^ about the vessels and along ?he 

 lification X 6. marked destruction of nerve tissue no doubt explains the symptoms of transverse myelitis. 



