Matsumoto Y, Yokoi H, Ikeda T, et al. - In the department of otolaryngology of a university hospital, researchers performed this study with the aim to analyze difficult-to-diagnose cases of odontogenic infection and antiresorptive agent-related osteonecrosis of the jaw (ARONJ) with facial subcutaneous abscesses by otolaryngologists. They included seven patients exhibiting odontogenic infection and ARONJ. Individuals in a wide range of age groups could experience occurrence of odontogenic infection with facial subcutaneous abscess formation; however, the pathological manifestations of ARONJ are frequently noted in older women, frequently at the chin and accompanied by nodules and pain in the adjacent teeth. They suggest computed tomography and orthopantomography as valuable for diagnosis; these are especially indicated for patients under long-term follow-up or with frequent recurrences. To exclude the possibility of tumors, there might be necessity for magnetic resonance imaging, cytodiagnosis, and histological analysis. Such facial subcutaneous abscesses can be managed with dental treatment and infection control, and often there is no requirement for surgical removal of the abscess. For patients with ARONJ, treatments such as sequestrectomy and sitafloxacin administration are valuable. Based on findings, they emphasize considering involvement of odontogenic infection and ARONJ for patients with facial subcutaneous abscesses.