What does Histiocytic mean?
Histiocytosis is a general name for a group of disorders or “syndromes” that involve an abnormal increase in the number of specialized white blood cells that are called histiocytes.
Is Langerhans a cancer?
Langerhans cell histiocytosis (LCH) LCH is classified as a cancer and sometimes requires treatment with chemotherapy.
What is a Histiocytic tumor?
A group of rare disorders in which too many histiocytes (a type of white blood cell) build up in certain tissues and organs, including the skin, bones, spleen, liver, lungs, and lymph nodes. This can cause damage to tissue or tumors to form in one or more parts of the body.
What does Histiocytic mean in medical terms?
Medical Definition of histiocytosis : abnormal multiplication of macrophages Langerhans cell histiocytosis broadly : a condition characterized by such multiplication.
What is LHC cancer?
Langerhans cell histiocytosis is a rare disorder that can damage tissue or cause lesions to form in one or more places in the body. Langerhans cell histiocytosis (LCH) is a rare disease that begins in LCH cells. LCH cells are a type of dendritic cell that normally helps the body fight infection.
What does Histiocytic infiltrate mean?
Histiocytic disorders (HDs) are a diverse group of diseases characterized by pathologic infiltration of normal tissues by cells of the mononuclear phagocyte system. The spectrum of these diseases ranges from treatable infectious diseases to rapidly progressive, life-threatening conditions.
What are histiocytic neoplasms?
Histiocytic sarcoma is a rare malignant neoplasm derived from histiocytes that commonly involves extranodal sites (skin, gastrointestinal tract), but can also involve lymph nodes. Histiocytic sarcoma is generally an aggressive neoplasm with poor prognosis; some localized cases may have a better prognosis.
What does histiocytic mean in medical terms?
Which is rare form of non Langerhans cell histiocytosis?
Erdheim-Chester Disease, an extremely rare form of non-Langerhans cell histiocytosis whose signs and symptoms are similar to those for LCH. Because it can affect critical organs such as the heart, brain, and kidneys, monitoring with a cardiologist, neurologist, and/or kidney specialist with knowledge of the disease is very important.
What are adult histiocyte disorders in the United States?
LCH arises when specialized histiocytes called dendritic cells become too abundant in various tissues or organs. Only a few hundred adults each year are diagnosed with LCH in the United States.
What kind of cells are involved in histiocytosis?
Histiocytosis is a generic name for a group of syndromes characterized by an abnormal increase in the number of certain immune cells called histiocytes. These include monocytes, macrophages, and dendritic cells.
What are histiocytoid cells in fine needle aspirations?
Histiocytoid cells are present in as many as 6% of all aspirates in which some features of papillary carcinoma are present. Increased awareness of these cells may help improve the sensitivity of fine-needle aspiration for the diagnosis of papillary carcinoma of the thyroid.