I don’t remember any explicit cancer announcements prior to the recent thyroid one for Becky herself. Becky’s mom had breast cancer that eventually metastasized into the lung cancer that killed her (and I think was considered a second case)?
I swear at least one other Becky clan family member also had cancer when she was with Amber. Could be confusing that with Misty angrily wishing that all the haydurs got crotch cancer.
That being said, with how much fat was around her thyroid, it seemed more a matter of time of when Becky would have thyroid cancer versus if. People had been suspecting Amber would get cancer from her weight for years before her diagnosis, even if uterine cancer wasn’t the most common guess.