Footnotes

• Contributors HSK and RK are the primary joint first authors on the manuscript, both responsible for the writing of the manuscript and a brief literature review relevant to the case. HSK was directly involved in the patient’s clinical care including conducting her bronchoscopy along with NN and RT. RK provided specialist pathology input on the manuscript and histology images relating to the case. NN and RT were both lead consultants responsible for the patient’s care and helped revise the manuscript for final submission.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.