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Table 1 Summary of histologic classification of DM-associated lung malignancies reported in the literature (1947–2017) [2353]

From: Ground-glass opacity heralding invasive lung adenocarcinoma with prodromal dermatomyositis: a case report

Histology Cases Frequency
Small cell carcinoma 21 43.8%
Squamous cell carcinoma 8 16.7%
Adenocarcinoma 8 16.7%
Neuroendocrine 3 6.3%
Undifferentiated 2 4.2%
Other 6 12.5%
Total 48 100.0%
  1. The category “other” comprises mixed histology (e.g., adenosquamous), anaplastic cell carcinoma, alveolar cell carcinoma, giant cell carcinoma, and non-small cell carcinoma not otherwise specified