We report the case of a in-year-old-man who developed febrile cytolysis as
the presenting sign of hemorragic fever with renal syndrome (HFRS). On admi
ssion, he had fever (40 degreesC) and epigastric pain. The AST level was at
2N, the ALT at 3N. There was a thrombocytopenia (61 000/mm(3)) without ane
mia or hyperleukocytosis. Three days after admission, the platelet count de
creased to 40 000/mm(3) serum urea and creatinine increased from normal rat
e to 10.8mmol/l, 204.0 mu mol/l, respectively. The HIV, HBV, HCV, leptospir
osis antibodies were negative. The Hantavirus serology was positive (Ig G:
1/512). This case suggests that HFRS should be entertained as a possible ca
use of cytolysis with thrombocytopenia in patients with fever and no initia
l sign of renal involvement in North-Eastern France.