Someone I’m close to was just diagnosed with this. I just can’t seem to understand what they are, as googling it leads to mostly research aimed at MDs. I thought a cyst was the body’s way of quarantining possible pathenogens in lymphocytes and other materials. This doesn’t seem to be that, but rather extra cells that duplicate the organ they’re attached to? So the body recognizes an error happening and sequesters them inside or alongside said organ? I’d really appreciate a simple explanation so I can understand this better.