Difference between revisions of "Hemophagocytic syndrome"
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{{ Infobox diagnosis | |||
| Name = {{PAGENAME}} | |||
| Image = Hemophagocytic_syndrome_-_cropped_-_very_high_mag.jpg | |||
| Width = | |||
| Caption = Micrograph showing phagocytosed RBCs in hemophagocytic syndrome. [[H&E stain]]. | |||
| Synonyms = | |||
| Micro = macrophages containing erythrocytes (red blood cells), leukocytes, platelets | |||
| Subtypes = primary, secondary | |||
| LMDDx = overlapping cells, [[emperipolesis]] | |||
| Stains = | |||
| IHC = | |||
| EM = | |||
| Molecular = FHL1 mutation or FHL2 mutation in primary form | |||
| IF = | |||
| Gross = | |||
| Grossing = | |||
| Site = [[lymph nodes]], [[liver]], [[spleen]], [[bone marrow]], others | |||
| Assdx = only in ''secondary'' form (EBV infection, malignancy, rheumatologic disease) | |||
| Syndromes = | |||
| Clinicalhx = +/-consanguinity for ''primary'' form (autosomal recessive) | |||
| Signs = fever, [[splenomegaly]], jaundice | |||
| Symptoms = | |||
| Prevalence = rare | |||
| Bloodwork = +/-EBV serology (secondary form), +/-HIV serology (secondary form) | |||
| Rads = | |||
| Endoscopy = | |||
| Prognosis = dependent on underlying cause | |||
| Other = | |||
| ClinDDx = malignancy | |||
| Tx = dependent on underlying cause | |||
}} | |||
'''Hemophagocytic syndrome''', also known as '''hemophagocytic lymphohistiocytosis''', is a rare condition often associated with viral infections. | '''Hemophagocytic syndrome''', also known as '''hemophagocytic lymphohistiocytosis''', is a rare condition often associated with viral infections. | ||
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Features:<ref name=pmid11076718/> | Features:<ref name=pmid11076718/> | ||
*Macrophages with phagocytosed: | *Macrophages with phagocytosed: | ||
** | **[[Erythrocyte]]s. | ||
**Leukocytes. | **Leukocytes. | ||
**Platelets. | **Platelets. | ||
DDx: | |||
*Overlapping cells (red blood cells overlapping macrophages). | |||
*[[Emperipolesis]] in the context of other pathology. | |||
===Images=== | ===Images=== | ||
Latest revision as of 00:50, 16 July 2015
| Hemophagocytic syndrome | |
|---|---|
| Diagnosis in short | |
 Micrograph showing phagocytosed RBCs in hemophagocytic syndrome. H&E stain. | |
|
| |
| LM | macrophages containing erythrocytes (red blood cells), leukocytes, platelets |
| Subtypes | primary, secondary |
| LM DDx | overlapping cells, emperipolesis |
| Molecular | FHL1 mutation or FHL2 mutation in primary form |
| Site | lymph nodes, liver, spleen, bone marrow, others |
|
| |
| Associated Dx | only in secondary form (EBV infection, malignancy, rheumatologic disease) |
| Clinical history | +/-consanguinity for primary form (autosomal recessive) |
| Signs | fever, splenomegaly, jaundice |
| Prevalence | rare |
| Blood work | +/-EBV serology (secondary form), +/-HIV serology (secondary form) |
| Prognosis | dependent on underlying cause |
| Clin. DDx | malignancy |
| Treatment | dependent on underlying cause |
Hemophagocytic syndrome, also known as hemophagocytic lymphohistiocytosis, is a rare condition often associated with viral infections.
Clinical
Features:[1]
- Fever.
- Splenomegaly.
- Jaundice.
Involved organs:
Classification
Classified by etiology:[2]
- Primary, i.e. inherited:[3]
- Secondary:
Microscopic
Features:[1]
- Macrophages with phagocytosed:
- Erythrocytes.
- Leukocytes.
- Platelets.
DDx:
- Overlapping cells (red blood cells overlapping macrophages).
- Emperipolesis in the context of other pathology.
Images
Hemophagocytic syndrome - cropped - very high mag. (WC)
Hemophagocytic syndrome - very high mag. (WC)
HLH (WC)
www:
See also
References
- ↑ 1.0 1.1 Fisman DN (2000). "Hemophagocytic syndromes and infection". Emerging Infect. Dis. 6 (6): 601–8. PMC 2640913. PMID 11076718. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2640913/?tool=pubmed.
- ↑ Gupta S, Weitzman S (January 2010). "Primary and secondary hemophagocytic lymphohistiocytosis: clinical features, pathogenesis and therapy". Expert Rev Clin Immunol 6 (1): 137–54. PMID 20383897.
- ↑ Nagai K, Yamamoto K, Fujiwara H, et al. (2010). "Subtypes of familial hemophagocytic lymphohistiocytosis in Japan based on genetic and functional analyses of cytotoxic T lymphocytes". PLoS ONE 5 (11): e14173. doi:10.1371/journal.pone.0014173. PMC 2994802. PMID 21152410. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2994802/.
- ↑ Online 'Mendelian Inheritance in Man' (OMIM) 603552
- ↑ Online 'Mendelian Inheritance in Man' (OMIM) 603553
- ↑ Humphrey, Peter A; Dehner, Louis P; Pfeifer, John D (2008). The Washington Manual of Surgical Pathology (1st ed.). Lippincott Williams & Wilkins. pp. 576. ISBN 978-0781765275.
- ↑ Jin YK, Xie ZD, Yang S, Lu G, Shen KL (June 2010). "Epstein-Barr virus-associated hemophagocytic lymphohistiocytosis: a retrospective study of 78 pediatric cases in mainland of China". Chin. Med. J. 123 (11): 1426–30. PMID 20819601.