neoplasm
• plasmacytomas occurring in lymph nodes, spleen, and very rarely the thymus often completely replace these lymphoid organs and invade the surrounding tissues
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• 100% of mice develop spontaneous lymphoid tumors beginning at 5 weeks of age
• tumors are mainly thymic lymphomas or plasma cell neoplasms
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• T cell tumors are exclusively lymphoblastic lymphomas
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• greater than 80% prevalence of plasma cell tumors
• plasma cell tumors are of three types: tumors composed primary of mature plasma cells characterized by a large cytoplasm and eccentric and sometimes binucleated nuclei with evident nucleoli, tumors with large atypical cells with irregular nuclei and conscious nucleoli, and tumors with atypical, pleomorphic/anaplastic cells
• in 20% of mice, the neoplastic plasma cells occupy the bone marrow spaces and invade into the vertebral bones
• tumors are of B-cell origin and express clonal immunoglobulin
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mortality/aging
• mean survival of 17 weeks
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behavior/neurological
• mice that have neoplastic plasma cell invasion into vertebral bones and the central nervous system show frequent gross limb paralysis and other postural and behavioral habits
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endocrine/exocrine glands
• T cell tumors are exclusively lymphoblastic lymphomas
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hematopoietic system
• T cell tumors are exclusively lymphoblastic lymphomas
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• serum shows presence of free light chain immunoglobulin
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immune system
• T cell tumors are exclusively lymphoblastic lymphomas
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• serum shows presence of free light chain immunoglobulin
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nervous system
• neoplastic plasma cells that invade into vertebral bones compress and often destroy the spinal ganglia
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• neoplastic plasma cells that invade into vertebral bones compress and often destroy the spinal nerves
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
multiple myeloma | DOID:9538 |
OMIM:254500 |
J:82127 |