title: [Retrospective analysis of upper aerodigestive tract cancer and thyroid cancer].
abstract: OBJECTIVE
  To study the definition, etiology, diagnosis, treatment and prognosis in patients with multiple primary malignant tumor of upper aerodigestive tract cancer and thyroid cancer.
  
  
  METHODS
  Retrospectively analyze the events of 7 cases with multiple primary malignant tumors of upper aerodigestive tract cancer and thyroid cancer.
  
  
  RESULTS
  Lesions of upper aerodigestive tract cancer and thyroid cancer located on the same side. After 4 to 8 years of follow-up, 2 cases of hypopharyngeal cancer and thyroid cancer got poor prognosis, prognosis of other patients with early stage laryngeal cancer and thyroid cancer is better.
  
  
  CONCLUSIONS
  The prognosis of multiple primary malignant tumors in patients with upper aerodigestive tract cancer and thyroid cancer depends on the biological behavior of aerodigestive tract cancer.
authors.forename: Hongzhi
authors.initials: H
authors.lastname: Ma
authors.forename: Ling
authors.initials: L
authors.lastname: Feng
authors.forename: Pingdong
authors.initials: P
authors.lastname: Li
authors.forename: Lizhen
authors.initials: L
authors.lastname: Hou
authors.forename: Weiguo
authors.initials: W
authors.lastname: Zhou
authors.forename: Xuejun
authors.initials: X
authors.lastname: Chen
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Chen
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Huang
authors.forename: Jugao
authors.initials: J
authors.lastname: Fang
mesh_terms: D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D011379:Prognosis; D012189:Retrospective Studies; D013964:Thyroid Neoplasms