Canine lymph node pathology

An examination of 13 samples of canine lymph nodes has been carried out. The lymph nodes were evaluated by histopathological findings. Also the changes of lymph node‘s structural, cell populations and blood cells infiltration were determined. Analysis of examination of microscopical data revealed three groups of lymph node‘s pathologies. Most cases were diagnosed as malignant tumors (46 %), second group was lymph node atrophy (39 %.), third group was reactive lymph nodes (15 %.). Pathomorfological findings suggested presence of T and B cell lymphomas. Most of identified malignant tumors were B cell lymphoma (75 %). It was found that dog males are affected more frequent (67 %) than dog females (33 %). In order to count mast cell, it was sort out 8 samples of lymph nodes. It was identified that in case of lymph node atrophy number of mast cell varies betweet 1 to 3 cells per field (x40 magnification). Analysis of amyloidosis were performed to 3 lymph nodes samples. It was revealed that 75% of cases amyloidosis were in conjuction with hemosiderosis. All samples of lymph nodes that demonstrated amyloidosis also were assigned to group with stuctural atrophy