title: [Leptospirosis and thrombocytopenia].
abstract: BACKGROUND
  Leptospirosis is a worldwide zoonosis caused by the spirochete Leptospira interrogans. The spectrum of symptoms reported in leptospirosis is extremely broad. Thrombocytopenia is common during the acute phase of leptospirosis but its pathophysiological mechanism remains not well defined.
  
  
  METHODS
  We report a 56-year-old man hospitalized for severe sepsis with acute kidney injury and liver failure. Because of the recent flood of his house, we suspected leptospirosis. The diagnosis was rapidly confirmed. Blood tests revealed thrombocytopenia at 9 G/L associated with hyperferritinemia and hypertriglyceridemia. Cytological examination of bone marrow showed abundance of megakaryocytes and hemophagocytosis which confirmed the diagnosis of hemophagocytic syndrome. Clinical symptoms resolved and blood tests returned to normal values in the same time.
  
  
  CONCLUSIONS
  We suggest that hemophogocytosis is a possible mechanism of thrombocytopenia in leptospirosis and that examination of bone marrow should be performed to confirm the diagnosis.
authors.affiliation: Service de réanimation médicale, hôpital Saint-André, CHU de Bordeaux, 1, rue Jean-Burguet, 33000 Bordeaux, France. Electronic address: nahema.issa@chu-bordeaux.fr.
authors.forename: N
authors.initials: N
authors.lastname: Issa
authors.affiliation: Service de réanimation médicale, hôpital Saint-André, CHU de Bordeaux, 1, rue Jean-Burguet, 33000 Bordeaux, France.
authors.forename: O
authors.initials: O
authors.lastname: Guisset
authors.affiliation: Service de réanimation médicale, hôpital Saint-André, CHU de Bordeaux, 1, rue Jean-Burguet, 33000 Bordeaux, France.
authors.forename: G
authors.initials: G
authors.lastname: Mourissoux
authors.affiliation: Service de réanimation médicale, hôpital Saint-André, CHU de Bordeaux, 1, rue Jean-Burguet, 33000 Bordeaux, France.
authors.forename: C
authors.initials: C
authors.lastname: Gabinski
authors.affiliation: Service de réanimation médicale, hôpital Saint-André, CHU de Bordeaux, 1, rue Jean-Burguet, 33000 Bordeaux, France.
authors.forename: F
authors.initials: F
authors.lastname: Camou
mesh_terms: D006801:Humans; D007922:Leptospirosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D013921:Thrombocytopenia / Q000382:microbiology*
keywords: Hemophagocytic syndrome; Leptospirose; Leptospirosis; Syndrome d’activation macrophagique; Thrombocytopenia; Thrombopénie