Reminder for all the ladies and estrogen takers - Just like any other woman, you need to do regular self-exams of your chest

https://en.wikipedia.org/wiki/Breast_self-examination

https://my.clevelandclinic.org/health/diagnostics/3990-breast-self-exam

Edit: https://lemmy.blahaj.zone/u/Fiona points out that WHO doesn't recommend self breast exams. According to the wikipedia article I linked, you could self exam every single day and suddenly find a walnut (Susan Love), and self exams have not been proven to save lives.