Open a topic that contains the media in the Paligo editor.

Right-click on the topic and select Edit Properties.

Look at the Reused in section on the dialog. It contains links to the topics where the media is reused.

In the Content Manager, expand the Media section and find the media file you are interested in.

Select the options menu ( ... ) for the media file and then select Edit Image.

Look at the Reused in section on the dialog. It contains links to the topics where the media is reused.