Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

This study was conducted after obtaining approval of the Ethics Committee of Nagasaki University Hospital (No 22051620), and in accordance with the Declaration of Helsinki Principles.

Informed consent

The patient and her family were informed and provided consent for clinical information and the accompanying images to be included in this case report. This study was conducted after obtaining approval of the ethics committee of Nagasaki University Hospital (No 22051620), and in accordance with the Declaration of Helsinki Principles.

Patient consent

The patient and her family were informed and provided written consent for clinical information and the accompanying images to be included in this report.