While case reports are not an especially encouraged form of scholarly activity, they are an important form of scholarship and are considered acceptable towards fulfilling the requirement. They can also be an excellent way for a new researcher get exposure to clinical scholarship, and to contribute to the greater mission of knowledge-building.
For more on case reports, see here
Also, a word of caution
For a paper on how to write case reports, check out this paper, or this one
a listing of cases that may potentially be used for case reports
can only be accessed via commonspirit account