Squamous cell carcinoma of the thyroid

Abstract

Eight cases of squamous cell carcinoma of the thyroid are reviewed. The clinical features and natural history of our cases are presented. All tumours showed an aggressive biological behaviour. Two patients showed association with well-differentiated thyroid cancer. It is difficult to conclude whether these tumours are de novo occurrences or were a result of a complete replacement of a previously existing condition after a change in histologic character.