A histiocytoma is a tumour consisting of histiocytes. Histiocytes are cells that are a part of the mononuclear phagocytic system, a part of the body's immune system that consists of phagocytic cells, which are responsible for engulfing solid particles by the cell membrane to form an internal phagosome by phagocytes and protists. Myxofibrosarcoma had been classified as a type of histiocytoma. However, the World Health Organization (2020) reclassified myxofibrosarcoma as a malignant tumor in the category of fibroblastic/myofibroblastic tumors. Types include:
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| - ورم المنسجات (ar)
- Histiocytoma (en)
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| - ورم المنسجات (بالإنجليزية: histiocytoma)؛ هو ورم يتكون من كثرة المنسجات . وهو المصطلح الطبي الذي يطلق على نوع من الخلايا التي تشكل جزءًا من نظام البلعمة أحادي النواة، وهو جزء من الجهاز المناعي للجسم يتكون من خلايا بلعمية ، تعتبر المسؤولة عن ابتلاع جزيئات صلبة بواسطة غشاء الخلية لتكوين بلعوم داخلي بواسطة البلعمة والبروتستات . ويظهر ورم المنسجات في نوعين الأول منها ليفي حميد والآخر خبيث وتشمل: (ar)
- A histiocytoma is a tumour consisting of histiocytes. Histiocytes are cells that are a part of the mononuclear phagocytic system, a part of the body's immune system that consists of phagocytic cells, which are responsible for engulfing solid particles by the cell membrane to form an internal phagosome by phagocytes and protists. Myxofibrosarcoma had been classified as a type of histiocytoma. However, the World Health Organization (2020) reclassified myxofibrosarcoma as a malignant tumor in the category of fibroblastic/myofibroblastic tumors. Types include: (en)
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| - ورم المنسجات (بالإنجليزية: histiocytoma)؛ هو ورم يتكون من كثرة المنسجات . وهو المصطلح الطبي الذي يطلق على نوع من الخلايا التي تشكل جزءًا من نظام البلعمة أحادي النواة، وهو جزء من الجهاز المناعي للجسم يتكون من خلايا بلعمية ، تعتبر المسؤولة عن ابتلاع جزيئات صلبة بواسطة غشاء الخلية لتكوين بلعوم داخلي بواسطة البلعمة والبروتستات . ويظهر ورم المنسجات في نوعين الأول منها ليفي حميد والآخر خبيث وتشمل:
* الساركوما الليفية المخاطية (MFS) وهي أحد أنواع السرطان؛ يصيب الأشخاص الذين تتراوح أعمارهم بين 50 و70 عامًا؛ ويظهر عادة ككتلة بطيئة النمو وغير مؤلمة على منطقة الساق أو الذراع.
* كثرة المنسجات الليفي الحميدة
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* (ar)
- A histiocytoma is a tumour consisting of histiocytes. Histiocytes are cells that are a part of the mononuclear phagocytic system, a part of the body's immune system that consists of phagocytic cells, which are responsible for engulfing solid particles by the cell membrane to form an internal phagosome by phagocytes and protists. Myxofibrosarcoma had been classified as a type of histiocytoma. However, the World Health Organization (2020) reclassified myxofibrosarcoma as a malignant tumor in the category of fibroblastic/myofibroblastic tumors. Types include:
* benign fibrous histiocytoma: This tumor has also been termed benign fibrous histiocytomas of the skin, superficial/cutaneous benign fibrous histiocytomas, common fibrous histiocytoma, and more recently dermatofibroma. The use of "histiocytoma" in these terms refers more to the morphologic appearance of some of the cells that comprise these lesions rather than their lineage: studies to date have not fully determined the lineage of the neoplastic cells in dermatofibroma tumors but recent cell marker studies suggest these cells originate from fibroblasts rather than histiocytes.
* malignant fibrous histiocytoma: This tumor is now termed undifferentiated pleomorphic sarcoma (UPS) because more recently developed immunohistochemistry and cytogenetic analyses suggest that its neoplastic cells most likely arise from mesenchymal stem cells or fibroblasts rather than histiocytes.
* histiocytoma (dog) (en)
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