Hepatitis in exanthematous mediterranean fever.

In 38 patients suffering from rickettsiosis caused by Rickettsia conorii (Mediterranean Exanthematous Fever), hepatic involvement was studied via laboratory tests and in 26 cases by means of liver biopsy. SGOT, SGPT and alkaline phosphatase were found to be elevated in more than half of the patients (SGOT 74.4 +/- 93 U.K., SGPT 82.2 +/- 93 U.K., a.p. 58 +/- 21 mU/ml). In 14 patients, liver biopsy showed the existence of inclusion corpuscles in Kupffer's cells. Electron microscopic study demonstrated the existence of phagosomes inside the epithelioid cells, which, however, were difficult to categorize. The frequent existence of granulomatous hepatitis in this rickettsiosis was confirmed, while the presence of the infecting agent in the liver could not be established.