EGFR and non-small cell lung carcinoma: El-Mashtoly et al. have imaged the distribution of the epidermal growth factor receptor (EGFR) inhibitor, erlotinib (Fig. 10); which is a frontline therapy used in the treatment of non-small cell lung cancer.49 Erlotinib has a conjugated aryl alkyne moiety, which gives rise to a comparatively intense Raman signal.