@article{oai:shiga-med.repo.nii.ac.jp:00000059,
 author = {ABE, Hajime and 阿部, 元 and TANI, Tohru and 谷, 徹 and SAKO, hirotaka and 迫, 裕孝 and SHIRAISHI, Tohru and 白石, 亨 and FUJITA, Masutsugu and 藤田, 益嗣 and KODAMA, Masashi and 小玉, 正智},
 journal = {滋賀医科大学雑誌},
 month = {Feb},
 note = {Parathyroid cysts are rare lesions of the neck and superior mediastinum. A 32-year-oldwoman visited a physician complaining of slight dyspnea, which was attributed to a lump on her neck. Ultrasonography and computed tomography showed a cyst extending from the left lobe of the thyroid gland to the superior mediastinum; and X-ray images revealed right deviation of the trachea. The cyst disappeared after fine-needle aspiration. However, the cyst fluid reaccumulated subsequently and she was admitted to our department. No abnormalities were recognized by blood chemical examinations or thyroid and parathyroid function tests. The cyst was removedsurgically and was diagnosed as a non-functioning parathyroid cyst, on the basis of high intact parathyroid hormone (PTH) level in the cyst fluid. The patient has made a full recovery, and shows no evidence of recurrence after 30 months.Parathyroid cysts can be differentiated from thyroid cysts by criteria such as the color of the cyst fluid, intact PTH levels in the cyst fluid, and the concentration of calcium, phosphate and PTH in the serum. Parathyroid cysts are typically located in the neck, and are solitary andunilocular; 10 percent occur in the mediastinum and 10 to 25 percent are complicated with hyperparathyroidism. Parathyroid cysts are classified into functioning and non-functioningdepending on the presence of hypercalcemia. Not only functioning parathyroid cysts but also non-functioning one should be removed surgically in cases of cyst fluid reaccumulation or tracheal and esophageal constriction.},
 pages = {57--61},
 title = {A Case of non-functioning parathyroid cyst with tracheal constriction},
 volume = {13},
 year = {1998},
 yomi = {アベ, ハジメ and タニ, トオル and サコ, ヒロタカ and シライシ, トオル and フジタ, マスツグ and コダマ, マサシ}
}