[Kikuchi and Fujimoto disease ].

Kikuchi-Fujimoto disease (KF) is a new and uncommon malady of unknown etiology, first described in Japan. Clinically runs with neck adenopathies no larger than 2 cm diameter. Young women are more frequently affected. Main features are fever and nocturnal swelling in half of cases. Laboratory findings are not diagnostically helpful and positive diagnosis is only reliable upon ganglion's histology. Be unaware of this sickness can arise confusion with a malignant lymphoma. The illness is harmless and autolimited in a few months term. We report a new case of KF disease, diagnosed through excision biopsy, after a previous needle biopsy had awakened one's suspicion about a non Hodgkin lymphoma.