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Table 6 Distribution of histology and stage in second primary lung cancer (SPLC) patients with history of an initial primary lung HGNEC

From: Risk of second primary malignancy in adults with pulmonary high-grade neuroendocrine carcinoma (HGNEC)

  SPLC Histology Small cell Other or unknown Total
Squamous cell Adenocarcinoma
HGNEC Histology N Row(%) N Row(%) N Row(%) N Row(%)  
 SCLC 206 38% 141 26% 81 15% 114 21% 542
 LCNEC 20 23% 34 40% 16 19% 15 18% 85
Total 226 36% 175 28% 97 15% 129 21% 627
  SPLC Stage     
Localized Regional Distant Unstaged Total
HGNEC Stage N Row(%) N Row(%) N Row(%) N Row(%)  
 Localized 71 51% 32 23% 34 24% 3 2% 140
 Regional 130 44% 71 24% 86 29% 9 3% 296
 Distant 68 41% 40 24% 52 31% 7 4% 167
 Unstaged 12 50% 4 17% 7 29% 1 4% 24
Total 281 45% 147 23% 179 29% 20 3% 627