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An increase in histiocytes, monocytes, or other reticuloendothelial elements.
[reticulo- + G. -osis, condition]
reticulohistiocytosis/re·tic·u·lo·his·ti·o·cy·to·sis/ (-si-to´sis) the formation of multiple reticulohistiocytomas.
multicentric reticulohistiocytosis a systemic disease of polyarthritis of the hands and large joints and development of nodular reticulohistiocytomas in the skin, bone, and mucous and synovial membranes, which may progress to polyvisceral involvement and death.