Complex sentence: In WHO-2004, basaloid squamous cell carcinoma is recognized as one of four variants of squamous cell lung carcinoma, making it a form of non-small cell lung carcinoma (NSCLC).
Split into simpler sentences: In WHO-2004, basaloid squamous cell carcinoma remains accepted as one of four histological variants of squamous cell lung carcinoma. It is therefore considered a form of non-small cell lung carcinoma (NSCLC).