Footnotes

• Handling editor Tahir S Pillay.

• Contributors AGS conducted literature search, data collection, and analysis and drafted the manuscript. KG performed the pathological analysis and drafted the manuscript. NB assisted in pathology analysis and in drafting the manuscript. AA managed the patient clinically and assisted in drafting the manuscript. SA performed the biochemical analysis and contributed to drafting the manuscript. VB performed the imaging studies. SL was the clinician in charge for the patient. AD supervised the pathology analysis and contributed to drafting the manuscript. All authors have read and approved the final manuscript.

• 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.