SOLITARY PLASMACYTOMA OF THE SUBMANDIBULAR LYMPH NODE WITH STROMAL AMYLOID DEPOSITS |
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| Authors: | Takaaki Ohmori Ryo Tabei Norimasa Arita Mari Kondo Tetsuo Kozawa Yoshinori Chikamori Norifumi Ueda |
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| Affiliation: | Second Department of Pathology. Department of Otolaryngology, Ehime;Division of Pathology, Clinical Laboratory, Ehime;, Ehime University School of Medicine, Ehime |
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| Abstract: | ![]()
This report concerns a case of solitary extramedullary plasmacytoma of the left submandibular lymph node in a 56-year-old man. The tumor showed monoclonal proliferation of abnormal plasma cells which revealed highly positive stainings of both methylgreen pyronin and kappa light chain using the immunoperoxidase technique in the cytoplasms, and further revealed massive'.amyloid'deposits in the stroma, which suggested the possibility of sequential amyloid formation upon the secretion of paraprotein by tumor cells. |
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