鼻腔・副鼻腔に発生し,上咽頭に進展した傍神経節腫瘍の1例

概要

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Nonchromaffin paraganglioma in the nose and paranasal sinuses is extremely rare. Within the scope of our review of the literature, this case report is the first that appeared in Japanese medical journals. A. 31-year-old female had complained of right nasal obstruction and mucopurulent rhinorrhea for two years. The right nasal cavity was filled with a polyp-like mass showing no tendency of bleeding or necrosis. Radiographies revealed a homogeneous shadow which occupied the entire nasal cavity and the paranasal sinuses. Due to profuse bleeding, total removal of the tumor needed repeated endonasal and transmaxillary operations succeeding to the ligation of both the external carotid and internal maxillary arteries. The tumor showed typical histopathologic findings of nonchromaffin paraganglioma. One year and three months after the removal of the nasal and paranasal tumor, it recurred at the posterior epipharyngeal wall which was removed totally without difficulty using the transmaxillary approach. Reviewing the literature on the diagnosis and treatment of this specific tumor, we emphasized the importance of suspicion when profuse bleeding occurred during the removal of a polyp-like mass.