Footnotes

• Contributors PT and PK were in charge of the patient and wrote the first draft of the manuscript. SS prepared the pathological image and report. TM prepared the CT image and submitted the manuscript. All authors approved the final version.

• Funding This work was funded by Medical Education Centre of Suratthani Hospital, Thailand.

• Competing interests None declared.

• Patient consent for publication Not required.

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