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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Lung Cancer. 2017 Jul 18;111:108–115. doi: 10.1016/j.lungcan.2017.07.009

Table 3.

Non-small cell lung carcinoma histology and results of cases submitted for evaluation PDGFRα expression by immunohistochemistry

Adenocarcinoma
N (%) 		Squamous Cell Carcinoma
N (%)
Total evaluable cases 22 11
Tumor positive 0 0
Tumor negative 22 (100) 11 (100)
Stroma positive 13* (81) 5* (71)
Stroma negative 3 2

Legend: Results of immunohistochemical staining for PDGFRα by subtype of NSCLC. Only 33 cases of 44 total specimens submitted for evaluation had sufficient tissue for interpretation, as most submitted tissues were core biopsy specimens following on-site work-up for diagnosis and NSCLC sub-typing.

*

Of the 33 submitted cases, only a subset had sufficient tumor stroma for evaluation due to needle sampling bias and some cytology cell block specimens submitted.