Hello and welcome to HCM
I have extracted following points from your query:
1. Cyst on thyroid- This cyst needs to be investigated by an ultrasound
and FNAC (Fine needle aspiration cytology). FNAC is an office procedure in which cells are aspirated from the swelling using a needle. The cells aspirated are spread on a slide and examined under a microscope. The character of the lesion is known on FNAC and managed accordingly.
node and cyst on the arm/ elbow also needs to be investigated by FNAC.
3. Fibrocystic disease
of breast- It is managed conservatively by medication and local application of oil of primrose. Visiting your doctor regularly for clinical examination is a good practise.
Thanks and take care
Dr Shailja P Wahal