Mature teratomas of the mediastinum, the most common extragonadal germ cell tumors in adults, usually arise within the anterior mediastinum. In contrast, the neck is an uncommon site for a teratoma. We report an unusual case of mediastinal mature cystic teratoma that extended to the neck. A 28-year-old woman presented with progressive, painful neck swelling, which compressed the trachea and deviated it to the right. Computed tomography (CT) of the chest revealed a cystic mass occupying an area from the anterior mediastinum to the cervical area; the lesion consisted of multiple tissue elements, including soft tissue, fluid, fat and calcification. The cystic mass was resected and the pathological diagnosis was a mature cystic teratoma. To the best of our knowledge, a mediastinal teratoma seldom presents as a neck swelling. Although a rare manifestation, it should be considered in the differential diagnosis of neck masses in adults.
Translated title of the contribution以頸部腫痛為初徵之縱膈腔成熟囊性畸胎瘤-病例報告
Original languageEnglish
Pages (from-to)416-421
Number of pages6
Issue number6
Publication statusPublished - 2007


  • 成熟囊性畸胎瘤
  • 頸部腫大
  • mature cystic teratoma
  • neck swelling


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