Multiple primary malignancies involving lung cancer.

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Takeaway

  • Colorectal cancer, esophageal cancer, and thyroid cancer were the most common tumors found to be accompanying lung cancer. 


Methodss

  • At a single institution in China, 5405 lung cancer cases were diagnosed between 2005 and 2013.
  • Of these, 185 patients (3.4 %) had multiple primary malignancies involving lung cancer, and were analyzed.
  • 10 patients (5.4 %)had three malignancies and 175 (94.6 %) had two malignancies, and 10 patients with three malignancies were excluded from the analysis.

Key Results

  • Of 175 accompanying malignancies, 64 (36.6 %) were synchronous patients and 111 (63.4 %) were metachronous patients.
  • 49 (28.0 %) had lung cancer as thier first malignancy and 126 (72.0 %) were other cancers first.
  • The most frequent accompanying malignancy wa...