Is long-term follow-up without surgical treatment a valid option for hepatic alveolar echinococcosis?

We read the article titled, "Long-term follow-up of liver alveolar echinococcosis using echinococcosis multilocularis ultrasound classification," by Schuhbaur J with great interest. However, we found some worthwhile issues that we believe should be discussed with the authors, and have provided our comments in this letter. It would be valuable if the authors could provide further information about the clinical stages, follow-up time, and clinical outcomes of the patients.