title: Hemophagocytic syndrome: a cause of pancytopenia in human ehrlichiosis.
abstract: A 67-year-old white man with human ehrlichiosis infection complicated by pancytopenia, hemophagocytic syndrome, disseminated intravascular coagulopathy and septic shock is presented. The patient had been on a three-week camping trip to California, Colorado, Utah, and New Mexico. The diagnosis of human ehrlichiosis was confirmed by sixteen-fold rise in antibody titer to Ehrlichia canis, and supported by the characteristic cytoplasmic inclusions. Human ehrlichiosis should be considered in the differential diagnosis in patients with fever and cytopenia associated with hemophagocytosis. Pancytopenia associated with ehrlichiosis is transient; however, it may be severe, and appears to be associated with destruction of normal blood elements.
authors.affiliation: Department of Medicine, Brooke Army Medical Center, Fort Sam Houston, Texas 78234-6200.
authors.forename: K C
authors.initials: KC
authors.lastname: Abbott
authors.forename: S J
authors.initials: SJ
authors.lastname: Vukelja
authors.forename: C E
authors.initials: CE
authors.lastname: Smith
authors.forename: C K
authors.initials: CK
authors.lastname: McAllister
authors.forename: K A
authors.initials: KA
authors.lastname: Konkol
authors.forename: T J
authors.initials: TJ
authors.lastname: O'Rourke
authors.forename: C J
authors.initials: CJ
authors.lastname: Holland
authors.forename: M
authors.initials: M
authors.lastname: Ristic
mesh_terms: D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis; D001772:Blood Cell Count; D001853:Bone Marrow / Q000473:pathology; D016873:Ehrlichiosis / Q000150:complications*; D015616:Histiocytosis, Non-Langerhans-Cell / Q000209:etiology* / Q000382:microbiology / Q000473:pathology; D006801:Humans; D008297:Male; D010198:Pancytopenia / Q000097:blood / Q000209:etiology*
chemical_list: D000907:Antibodies, Bacterial