I had rapid weight gain for no reason over a month period. (about 15 pounds). I saw my doctor and was referred to an endocrinologist and to have an ultrasound done bc normal blood tests. My ultrasound showed nodules and a cysts. On the right side, I have a cyst that is 1.8*.07*1.1 mm big. On the lest, I have several hyperechoic lesions w central hyperechoic dot or linear area, which represents some central calcification. The largest in the inferior pole measures 4*2.1*2mm. What does that mean?