Puneet Varma

Sea blue histiocytosis

Updated on
Share on FacebookTweet on TwitterShare on LinkedIn
Specialty  hematology
ICD-10  D76.3 (ILDS D76.330)

Sea-blue histiocytosis is a cutaneous condition that may occur as a familial inherited syndrome or as an acquired secondary or systemic infiltrative process.



It can be associated with the gene APOE.

It can also be acquired. Sea-blue histiocyte syndrome is seen in patients receiving fat emulsion as a part of long-term parenteral nutrition (TPN) for intestinal failure.

Pathophysiology and presentation

The high lipid content in the blood leads to excessive cytoplasm loading of lipids within histiocytes.

The subsequent incomplete degradation of these lipids leads to the formation of cytoplasmic lipid pigments.

High lipid content may also cause membrane abnormality of the hemopoietic cells which is recognized by macrophages and therefore, increased accumulation within the bone marrow.

These lipid laden histiocytes appear blue with May-Giemsa/PAS stain hence the name of Sea-Blue Histocyte Syndrome. Sea-blue histiocytosis is also seen in lipid disorders.


Sea-blue histiocytosis Wikipedia

Similar Topics
Raja Saab
Dragan Perić
Matthew Gravelle