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Introduction: Hyperammonemia attributed to multiple myeloma has been rarely reported., Case Report: We report a 63-year-old man who was admitted to an intensive care unit for confusion and altered mental status progressing to coma that was related to a relapsing multiple myeloma. Chemotherapy allowed the reduction of serum ammonia and the return to a normal state of consciousness., Conclusion: Hyperammonemic encephalopathy is a rare complication of multiple myeloma and is associated with high in-patient mortality. To our knowledge, this is the first case of hyperammonemic encephalopathy due to a relapsing myeloma diagnosed and treated in intensive care unit., (Copyright © 2015 Société Nationale Française de Médecine Interne (SNFMI). Published by Elsevier SAS. All rights reserved.)

Introduction: 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., Case Report: 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., Conclusion: 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., (Copyright © 2014. Published by Elsevier SAS.)