[Cat-scratch disease. Presentation of 2 cases in a family with serologic follow-up and discussion of diagnostic methods]. / Enfermedad por arañazo de gato. Presentación de dos casos familiares con seguimiento serológico y discusión de métodos diagnósticos.

Two cases are reported of cat scratch disease which we consider worth describing both because of their familial presentation (the involved patients were brothers) and the serologic follow-up performed after diagnosis, which showed significant increases in IgG antibody titers to Bartonella henselae in both patients, one on day 35 and the other on day 45 after diagnosis. Cat scratch disease is a rarely diagnosed condition in our environment and it is easily misdiagnosed with other regional lymphadenitis; hence, a serologic test revealing a seroconversion or a significant increase in serologic titers will be very useful, as well as the epidemiologic antecedent of cat exposure.

[Still's disease of the adult: analysis of a series of 9 cases]. / Enfermedad de Still del adulto: análisis de una serie de 9 casos.

Characteristic features of 9 patients (5 male, 4 female) affected by Still's disease of adult (SDA) were analysed. All of them had fever and in 7 cases it was associated to arthritis and cutaneous rash. The most frequently affected joints were knees, ankles, and carpus. The sedimentation rate was increased in all patients and 6 of them had associated leucocytosis. 5 patients had mild inflammation synovial fluid. The histological changes found were: cutaneous perivascular inflammation, reactive lymph node enlargement, sinusoid dilatation and hepatic periportal inflammation. The NSA were active in 4 patients but 5 needed steroids to control the systemic clinical alterations. 3 patients relapsed and one was diagnosed as having sarcoidosis 3 years later, the possible association not having being described. We concluded that suspicion is the most important factor for an early diagnosis.