Pathological fractures of the mandible are rare, comprising 1-2% of this injuries.The aim of the study was to analyse demographic data, etiology, site and treatment procedures of pathological mandible fractures.Material and methods. The retrospective study comprised 17 patients (10 males and 7 females) with pathological mandible fracture. Upon the basis of the medical documentation, demographic data, such as age and sex, were recorded, and so were clinical data: mechanism of the fracture, its cause (pathology, causing lowering the mechanical resistibility of the mandible), location and manner of the treatment.Results. Most common cause of the fracture was presence of odontogenic cyst and mandibular atrophy. Most common mechanism of injury were chewing and falls. Regardless of the causes, the majority of the fractures occurred in the body of mandible.Conclusion. Treatment of the mandibular pathological fractures differs according to etiology.