Matsuki T, et al. - Given that anatomical and histological complexity of tumors in the parapharyngeal space create difficulty in their preoperative diagnosis, researchers compared the classification of tumor localization in the prestyloid and retrostyloid compartments by imaging and preoperative cytological diagnosis by fine-needle aspiration cytology with the postoperative histopathological diagnosis in 120 patients with tumors in the parapharyngeal space, in order to evaluate the utility of preoperative diagnosis. Sixty-eight and fifty-two patients had tumors located in the prestyloid and retrostyloid compartments, respectively. As per results, presumptive diagnosis was better made with the preoperative classification of tumor localization and cytological diagnosis.