Diagnostic problems with tumors located in the retromaxillary space.
D006258:Head and Neck Neoplasms / Q000175:diagnosis; D008441:Maxillary Neoplasms / Q000175:diagnosis; D009303:Nasopharyngeal Neoplasms / Q000175:diagnosis; D012468:Salivary Gland Neoplasms / Q000175:diagnosis; D012888:Skull Neoplasms / Q000175:diagnosis