[Ethmoidal fibroma in an 18-month-old infant (author's transl)]

A case of ethmoidal fibroma in an 18-month-old infant is reported, and nosological, histological, and pathogenic features of this rare affection discussed. Though similar in some respects to Jaffe Lichtensteins fibrous dysplasia in its localized form, it differs, in that it sometimes runs a rapid course and has a tendency to relapse.