Positive Band Aid Sign

Most of us use the term "Positive Band Aid Sign." Let's call it PBAS
PUBMED has no articles on this entity and Google only had one or two hits.

I've seen three PBASs in the past week. What do you think of them? What lesions would you guess underlie the bandaids.


1. 72 yo woman with one month history of a lesion on upper lip



















2. 22 yo woman with 3 month history of lesion on arm
















3, 93 yo woman with one month history of lesion on arm