Although the diagnostic rate of organizing hematoma has increased, any crucial characteristic findings are not fully understood and elucidated. Even though it is a non-neoplastic lesion, radiological image findings can range from a benign expansile appearance to a more aggressive form such as bony erosion, which sometimes can make any confusion. Thus, clinician should make a diagnosis thoroughly based on the histopathologic finding. Here, we presented two cases of organizing hematoma of the maxillary sinus mimicking chronic rhinosinusitis.

• 이지은(조선대학교 의과대학 이비인후과학교실) | Jieun Lee (Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Chosun University, Gwangju, Korea) Corresponding author
• 오정현(조선대학교 의과대학 이비인후과학교실) | Jeonghyun Oh (Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Chosun University, Gwangju, Korea)