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Introduction: The diagnosis of jaw tumours is histological. Jaw tumours can be classified as benign or malignant. Benign jaw tumours can be classified as epithelial, mesenchymatous or epithelio-mesenchymatous based on their origin or with respect to their relation to the development of the dental organ into odontogenic and non -odontogenic. Methods: A retrospective study was conducted from the period from January 2010 to April 2020 in the Stomatology and maxillofacial surgery units and pathology units of 4 hospitals in Yaoundé. Participants who had been operated for a benign jaw tumour with available and exploitable histopathological workups were retained in this study. The histological slides found were examined by a team of pathologists in accordance with the 2005 World Health Organization classification of head and neck tumours. Results: We retained 62 participants, ameloblastoma was the most represented tumour (25.81 %) followed by fibrous dysplasia (12.9 %) and Keratocystic odontogenic tumour (12.9 %). Ameloblastoma had 5 recurrences with a recurrence rate of 31.25 %. Conclusion: Ameloblastoma was the most common benign jaw tumour and odontogenic tumour with Fibrous dysplasia being the most frequent non odontogenic tumour. Better description of histological characteristics and typing would help to prevent recurrence and complications such as malignant transformation. Digital recording of histopathological slides could help improve conservation and permit the carrying out long term retrospective studies in our settings.

Ameloblastic carcinoma is a rare malignant odontogenic neoplasm that typically develops in the mandible rather than the maxilla.Ameloblastic carcinoma is divided into two categories: primary and secondary.We present a case report observed at the Yaoundé University Teaching Hospital of a secondary maxillary ameloblastic carcinoma following multiple recurrences of a desmoplastic ameloblastoma in a 64-year-old female.The diagnosis of ameloblastic carcinoma relies heavily on histology.

Introduction: Benign jaw tumors or tumor-like swellings of the jaws can be classified as odontogenic or non-odontogenic. The type of surgery undertaken or the histological typing of the tumor could be the cause of the recurrence of these tumors. Our objective was to determine clinical and paraclinical features implicated in or that signal the recurrence of benign tumors. Material and methods: We carried out a case control study during the period from January 2010 to April 2020 in the units of Stomatology and maxillofacial surgery, radiology and pathology units of Yaoundé University Teaching Hospital, Yaoundé Central Hospital and Yaoundé Gynaecology, Obstetrics and Pediatrics Hospital. Participants who had been operated for a benign jaw tumor were included in this study. For the statistical analysis: the significant threshold was set at 0.05 that is all p values less than 0.05 were considered statistically significant. Results: We retained 89 study participants with a recurrence rate of 7.51%. In our study, we had 61.8% females and 38.2% males with a sex ratio of 0.62. The localization at the level of the angle and ramus of the mandible, tooth preservation, type of anesthesia, radiological tumor aspect and histomorphology (ameloblastic fibroma and osteoma) were statistically significant for recurrence. Conclusion: The recurrence of jaw tumors is associated with several clinical and paraclinical factors. These factors can help predict recurrences and hence reduce the complications associated with late treatment plan.