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Correspondence
An early lesion of pulmonary carcinosarcoma: possible diagnostic problem in frozen section interpretation
  1. H Hattori
  1. Department of Pathology, Kariya General Hospital, Sumiyoshicho 5–15 Kariya, Aichi 448-0852, Japan; hattori.kariya-gh.pathol@kariya-gh.or.jp

    https://doi.org/10.1136/jcp.56.8.638

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      Sarcomatoid carcinoma is a rare malignant neoplasm of the lung.1 Its definition was ambiguous until the recent establishment of World Health Organisation (WHO) criteria, according to which it is classified into carcinosarcoma, pleomorphic carcinoma, and spindle cell carcinoma.1 Most of the reported cases of carcinosarcoma or pleomorphic carcinoma of the lung have been large tumours. We present a case of an extremely small carcinosarcoma of the lung with an unfavourable course.

      An asymptomatic 69 year old man was admitted to our hospital because of a coin lesion that was detected on a medical examination. He had smoked 20 cigarettes a day for …

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