It's definitely not a dumb question. I just moved your thread to the Nursing Career Advice
Forum for the best chance of getting some good responses. I don't know of any nurse practitioner programs that allow specialization in anatomic or clinical pathology, but there might be other ways of incorporating your interests into a nursing career.
At the cancer center where I used to work, nurses perform vital roles in some top-notch cancer research. They aren't typically working in labs looking at cells, but they're often collecting data (like side effects a patient felt when taking a particular drug) or coordinating the care of patients who are being treated with a certain research protocol.
If the autopsy/medical examiner side of pathology is intriguing to you, there are also nurses who serve as medicolegal death investigators. This type of position usually involves some specialized training and a solid background in nursing.