Inflammatory myofibroblast tumors (IMT) formerly known as inflammatory pseudotumours was first described in 1905 by Birch-Hirschfield and is characterized by myofibroblastic proliferation associated with lymphocytes, histiocytes, plasmocytes and macrophages that form part of a stroma rich in collagen fibres. Several hypotheses such as autoimmune, infectious and tumour origin have often been discussed, although etiopathogeny is not yet fully understood. The cervico-facial location is extremely rare, less than 3%, and precisely the maxillary has been reported only twenty times in the literature .The treatment is based primarily on the most carcinogenic surgical resection possible when the tumor is accessible. We report the observation of a patient followed in our unit for a pseudoinflammatory maxillary localization tumor. The authors would like to share their approach and discuss the clinical, paraclinic and therapeutic aspects of this rare entity never seen before in our experience.