[Adult Still's disease: an unrecognized cause of acute febrile hepatic cytolysis. Study of twelve patients].

Objective: Certain liver test abnormalities have been described in adult Still's disease. The objective of the present study was to analyze their type and frequency.

Patients: In a 10 year retrospective study, patients were included if they fulfilled Kahn's and/or Yamaguchi's diagnostic criteria (median follow-up: 6.5 years).

Results: Twelve patients were selected. The median age was 25 years old and the sex ratio H/F was 2.7. Fever was present in 100% of patients and hepatomegaly in 41%. Liver test abnormalities were identified in 92% of patients: moderate cytolysis (level of transaminases between 2 and 5 N) (83%), severe cytolysis (level of transaminases > 5 N) (17%), cholestasis (elevated levels of GGT and/or alkaline phosphatase) (75%), and an increase in the LDH level (41%). All these liver abnormalities resolved spontaneously or during treatment (83%), within a median of 18 days.

Conclusion: Our study confirms the high frequency of liver test abnormalities (> 2/3 of the patients) in adult Still's disease. These abnormalities are generally moderate and asymptomatic (3/4 of the cases), but severe cytolysis may exist. This emphasizes the need to consider a diagnosis of adult Still's disease in the presence of fever and elevated transaminase activity.