Unusual Lipomatous Lesion with Extramedullary Hematopoiesis Possibly Derived from Ito (Perisinusoidal) Cells in a CD-1 Mouse
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概要
- 論文の詳細を見る
A grayish white nodule, 1.0 × 1.0 × 2.0 cm in size, was grossly observed in the liver of a 110-week-old male CD-1 mouse. Microscopically, the lesion was characterized by two types of proliferation area, one of which was composed of a lipomatous proliferation with small spindle cells and severe extramedullary hematopoiesis (EMH). The other area was composed of large spindle cells closely proliferating along the hepatic cords. The proliferative lesion was partly positive for vimentin and had increased amounts of laminin, which is an extracellular matrix protein synthesized by Ito cells. Ultrastructurally, the lipomatous area contained cells with individual lipid droplets in the cytoplasm. The characteristic findings of this nodule were similar to those of Ito cell tumors in mice reported previously, except for the severe EMH in our case.
- 日本毒性病理学会の論文
- 2007-06-30
著者
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Kotani Yuri
Kashima Laboratory, Mitsubishi Chemical Medience Corporation
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TSUCHITANI Minoru
Mitsubishi Chemical Safety Institute Ltd.
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Wako Yumi
三菱化学安全科学研究所鹿島研究所
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Wako Yumi
Mitsubishi Chemical Safety Institute Ltd.
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Kotani Yuri
Kashima Laboratory Mitsubishi Chemical Medience Corporation
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DOI Takuya
Mitsubishi Chemical Safety Institute Ltd.
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KUROTAKI Tetsuro
Mitsubishi Chemical Safety Institute Ltd.
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KOTANI Yuri
Mitsubishi Chemical Safety Institute Ltd.
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Tsuchitani M
Mitsubishi Chemical Safety Institute Ltd.
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Tuchitani Minoru
Mitsubishi Chemical Safety Institute Ltd.
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Tsuchitani Minoru
Kashima Laboratory Mitsubishi Chemical Safety Institute Ltd.
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Wako Yumi
Nonclinical Research Center Drug Development Service Segment Mitsubishi Chemical Medience Corporatio
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