title: Adenosquamous carcinoma arising in a thyroglossal duct cyst: report of a case.
abstract: A 61-year-old Japanese woman had an 11-year history of an enlarging anterior neck mass that was diagnosed otolaryngologically as a thyroglossal duct cyst. Preoperatively, fine-needle aspiration cytology suggested a neoplastic lesion, but no obvious malignancy was clinically evident. Sistrunk's operation was performed. An adenosquamous carcinoma arising in a thyroglossal duct cyst was found on pathological examination. Carcinoma arising in a thyroglossal duct cyst is rare, and only approximately 200 cases have been reported, most of which were papillary carcinoma. Only 21 cases of squamous cell carcinoma arising in a thyroglossal duct cyst have been reported. The present case is the first report of adenosquamous carcinoma arising in a thyroglossal duct cyst.
authors: Department of Pathology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors: Naoe
authors: N
authors: Kinoshita
authors: Kuniko
authors: K
authors: Abe
authors: Yuzuru
authors: Y
authors: Sainoo
authors: Hidetaka
authors: H
authors: Kumagami
authors: Haruo
authors: H
authors: Takahashi
authors: Tomayoshi
authors: T
authors: Hayashi
mesh_terms: D044963:Biopsy, Fine-Needle; D018196:Carcinoma, Adenosquamous / Q000175:diagnosis* / Q000601:surgery*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013955:Thyroglossal Cyst / Q000175:diagnosis* / Q000601:surgery*; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000601:surgery*