You can conference call and get second opinions on your cases easily using PIMS DX.

The pathologist you're calling can even interact with the image you have open.
The video below illustrates how to do this using the 'Give Control' feature in Microsoft Teams.

There are similar options for all major video conferencing software. You can find guides to give/take control of the screen when using Zoom, Google Meet, and Microsoft Teams, just click on the name of the conference call service you prefer.