"' Langerhans cell histiocytosis "'( "'LCH "') is a rare disease involving clonal proliferation of Langerhans cells, abnormal histiocytoses, which are characterized by an abnormal proliferation of histiocytes ( an archaic term for activated dendritic cells and macrophages ).
32.
He is the current, re-elected Secretary-General of the Executive Committee and Board of the American Thyroid Association ( ATA ), German Society of Hematology and Oncology ( DGHO ), Belgian Society for Medical Oncology ( BSMO ), Japanese Society of Medical Oncology, Connective Tissue Oncology Society ( CTOS ) and the Histiocyte Society.
33.
"' Chronic Histiocytic Intervillositis "'( "'CHI "'or "'CHIV "') also known as Chronic Intervillositis of Unknown ( A ) etiology ( CIUE ) and Massive Chronic Intervillositis ( MCI ) is defined as a diffuse infiltration of mononuclear cells ( histiocytes, lymphocytes, monocytes ) of maternal origin into the intervillous space within the placenta.
34.
However, the term " histiocyte " has been used for multiple purposes in the past, and some cells called " histocytes " do not appear to derive from monocytic-macrophage lines . ( The term Histiocyte can also simply refer to a cell from monocyte origin outside the blood system, such as in a tissue ( as in rheumatoid arthritis as palisading histiocytes surrounding fibrinoid necrosis of rheumatoid nodules ).
35.
However, the term " histiocyte " has been used for multiple purposes in the past, and some cells called " histocytes " do not appear to derive from monocytic-macrophage lines . ( The term Histiocyte can also simply refer to a cell from monocyte origin outside the blood system, such as in a tissue ( as in rheumatoid arthritis as palisading histiocytes surrounding fibrinoid necrosis of rheumatoid nodules ).
36.
However, the term " histiocyte " has been used for multiple purposes in the past, and some cells called " histocytes " do not appear to derive from monocytic-macrophage lines . ( The term Histiocyte can also simply refer to a cell from monocyte origin outside the blood system, such as in a tissue ( as in rheumatoid arthritis as palisading histiocytes surrounding fibrinoid necrosis of rheumatoid nodules ).
