부인두강에서 발생한 아령모양의 신경초종

Although uncommon and mostly benign, primary parapharyngeal space tumors constitute important pathologies of the head and neck due to the difficulties encountered in their preoperative assessment and surgical treatment. The parapharyngeal space typically divides into pre-styloid and post-styloid space. When deep lobe parotid tumor extends to the parapharyngeal space, the tumor frequently assumes a dumbbell shape, due to opening of stylomandibular tunnel is narrow and relatively inextensible. So many Head and neck clinician regarded prestyloid, dumbbell shaped tumor as parotid origin tumor. In this report, we describe a case of dumbbell shaped pre-styloid paraphayngeal space tumor at CT imaging, which was turned out Schwannoma, that was successfully treated with operation. (J Clinical Otolaryngol 2016;27:162-165)