I can't think how it would relate to medicine, maybe there are some doctors on here who can help. A PE bag is a sports kit bag. In English schools, we have physical education lessons, or PE, this is basically an hour where the children play sports so, we carry a bag to school with our sports kit inside and we call this our PE bag. Hope this helps.

I'm not sure how that relates to medicine, but it probably means a "physical education" bag or "gym bag," usually used for carrying exercise clothes and such.

Can you give a context for this? There is a chance it could be something in the area of a colostomy bag or similar. I can't think what PE would stand for, however