Wiktionary
n. A tumour consisting of histiocytes.
Wikipedia
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.
Types include:
- myxofibrosarcoma
- benign fibrous histiocytoma
- malignant fibrous histiocytoma
- histiocytoma (dog)
A histiocytoma in the dog is a benign tumor. It is an abnormal growth in the skin of histiocytes ( histiocytosis), a cell that is part of the immune system. A similar disease in humans, Hashimoto-Pritzker disease, is also a Langerhans cell histiocytosis. Dog breeds that may be more at risk for this tumor include Bulldogs, American Pit Bull Terriers, American Staffordshire Terriers, Scottish Terriers, Greyhounds, Boxers, and Boston Terriers. They also rarely occur in goats and cattle.