Abstract
BACKGROUND: Novel therapeutic agents are currently being investigated for neuroendocrine tumour treatment. CASE PRESENTATION: We report here on the case of a patient presenting with hypersensitivity pneumonitis while being treated with everolimus, a mammalian target of rapamycin (mTOR) inhibitor. CONCLUSION: Side effects of everolimus should be familiar to clinicians, including nonspecialists, and be monitored carefully to allow for prompt management.