Footnotes

• Contributors C-YG and C-HL wrote the manuscript. Y-JH and Y-YC treated the patient. C-HH and H-HW performed and interpreted imaging studies.

• 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.

• Patient consent for publication Not required.

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

• Data availability statement All data relevant to the study are included in the article.