Primary Hematopoietic and Lymphoid Tissue ›› Bone Marrow ›› Abnormal

Leishmania in Histiocytes*






Microscopic Features:
  • Small round/oval parasitic forms with kinetoplasts are noted here within the cytoplasm of this histiocyte
Normal % blood-PB, marrow-BM, lymphoid tissue-LN:
  • PB: None
  • BM: None
  • LN: None
May Resemble:
  • Histoplasma in histiocytes
  • Cellular debris in Histiocytes
  • Bacteria in Histiocytes
Differential Diagnoses:

Leishmaniasis
Histoplasmosis
Cellular debris within histiocytes
Bacterial infection

Classic Immunophenotype:
  • N/A
Cartoon Image:



Misc:
  • Histoplasma fungal forms lack kinetoplasts (small dark blue rod shaped structures within the organism) which are present in leishmania