cutaneous histiocytic infiltration

The histiocytic proliferations in the skin include :
 proliferations of monocytes (acute monocytic leukemia),
 proliferations of tissue macrophages or histiocytes (histiocytic sarcoma and its disseminated form, malignant histiocytosis; familial histiocytoses; and multicentric reticulohistiocytosis),
 proliferations of Langerhans’ cells (histiocytosis X),
 proliferations of as yet undefined cells of the mononuclear phagocyte system (sinus histiocytosis with massive lymphadenopathy).

Examples

 cutaneous Langerhans cell histiocytosis

• https://twitter.com/GeronimoJrLapac/status/1447655989579235334

References

 Cutaneous histiocytic proliferations
P van der Valk, C J Meijer
PMID: 3916176