[Summarising a case you experienced: how to write an abstract effectively].

Just like the title, a well-written abstract is crucial for submitting your case report to conferences or medical journals. Authors should write the abstract following four key principles. First, one should be guided by the ABCs of writing-accurate, brief, and clear. Do not include unnecessary information. Second, the abstract is not the preview. Abstracts should be stand-alone. Do not write 'we report this case, adding discussion with the literature' or 'additional cases are needed in future' at the end of the abstract. Third, do not simply focus on the rarity of the case. Avoid writing statements such as 'we report this case because it is a rare, valuable/worthful case'. The abstract of a case needs a clear 'learning point' for readers. Lastly, carefully confirm and follow the guidelines of target conferences or journals.