Ameloblastoma: a retrospective single institute study of 34 subjects.

This study aims to clarify demographic and clinical aspects of patients with ameloblastoma treated at a single Finnish institute during 1985-2016. Associations between predictor variables (gender and age) and outcome variables (location, tumour type, growth patterns and average tumour size) were sought. A retrospective cohort study was designed and implemented including 34 patients diagnosed with primary ameloblastoma and treated at the Helsinki University Central Hospital. Patient records were investigated, and tissue samples re-evaluated. The chi-square test was used on all categorized variables and -test for continuous ones. A value equal to or under .05 was considered significant. Males were slightly more predominant among the Finnish patients with ameloblastoma. Maxillary tumours were seen exclusively in male patients ( = .034). Additionally, these patients were older than patients with mandibular tumours ( = .007). A mixture in histological growth patterns was more common than originally anticipated. The study revealed a wide range of clinical signs and subjective symptoms, of which pain or other sensations were experienced most often. This study of 34 subjects shows that southern Finnish patients with ameloblastoma do not substantially differ from patients in similar study designs.