A case of Rosai-Dorfman disease with typical cytological feature
Hisayuki Tsugitomi, Mitsuo Nakamura, Daisuke Mori, Humirou YAMASAKI, Osamu Tokunaga
Abstract
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Hisayuki Tsugitomi, Mitsuo Nakamura, Daisuke Mori, Humirou YAMASAKI, Osamu Tokunaga
Abstract
Open-access reader
We report a case of Rosai-Dorfman disease with typical cytological features of the lymph node confirmed by imprint smear, which showed numerous plasma cells and large histiocytes containing nondegenerated blood cells. Immunohistochemically, histiocytes were positive for S-100 protein. Histologically, follicles were decreased and histiocyte filling was noted in the expanded lymphatic sinus. Emperipolesis was also noted. Rosai-Dorfman disease is diagnosed by the presence of emperipolesis in large histiocytes, considerable plasma cell infiltration, and positive S-100 protein presence in histiocytes confirmed by imprint smear.
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We report a case of Rosai-Dorfman disease with typical cytological features of the lymph node confirmed by imprint smear, which showed numerous plasma cells and large histiocytes containing nondegenerated blood cells. Immunohistochemically, histiocytes were positive for S-100 protein. Histologically, follicles were decreased and histiocyte filling was noted in the expanded lymphatic sinus. Emperipolesis was also noted. Rosai-Dorfman disease is diagnosed by the presence of emperipolesis in large histiocytes, considerable plasma cell infiltration, and positive S-100 protein presence in histiocytes confirmed by imprint smear.
Key concepts: Emperipolesis, Rosai–Dorfman disease, Histiocyte, Pathology, Medicine, Lymph node, Sinus Histiocytosis with Massive Lymphadenopathy, Lymph