It can be associated with the gene APOE. It can also be acquired.<unk> -blue histiocyte syndrome is seen in patients receiving fat emulsion as a part of long-term parenteral nutrition (TPN) for intestinal failure.
Sea-blue histiocytosis
Crystal-storing histiocytosis
X-type histiocytosis
Langerhans cell histiocytosis
Malignant histiocytosis
Non-X histiocytosis
Non-Langerhans cell histiocytosis
Langerhans cell sarcoma