Importing Anatomical STL file

I am a new user and am trying to evaluate Rhino for editing Anatomicla models that have been generated from CT scans. The models are meshed STL files geenerated from Mimics. When I import,into Rhino, I do net see any image on the screen. Am I doing something wrong?

There’s some issue with double precision meshes… Maybe it’s this the problem. Could you post a small example of your at file?

I wonder if its something simple, like your imported mesh is just not centered in the viewport… after import, if rhino says ‘yadayada objects imported’ do a selall then zoomselected.
and make sure you are in a shaded viewport with all options to view mesh and other objects checkmarked in the display tab.