[Mediastinal form of cat-scratch disease].

The authors reported a case of Cat--Scratch Disease (CSD) in a 14-year-old boy; it was an unusual CSD by its mediastinal mass location. Histopathological lesions which appeared as pseudo-tubercular folliculi mislead us. Disease was finally diagnosed by biological exams: a strongly positive Hanger-Rose reaction and serological assays used for the diagnosis of psittacosis, ornithosis, lymphagranuloma venereum and trachoma. CSD is a common cause of chronic lymphadenopathy in children. In the majority of patients, CSD is a mild illness. Some unusual forms as Parinaud's oculoglandular syndrome, neurological lesions, osteomyelitis and exceptionaly mediastinal lymphadenopathy have been reported. 2 cases of the latest ones were already described.