Hello and welcome to HCM
There are many causes for cysts on the body.
Common causes include epidermoid cyst
, trichelemal cyst or a simple cyst
Besides a cyst it can be a soft tissue
The exact nature of the lesion, an excision biopsy
needs to be done.
Excision/ removal of the cyst and subsequent examination of the removed tissue will determine its exact nature.
However, a clinical examination of both swelling at the back and on the occiput needs to be done.
So, consult your doctor for further management.
Hope it helps.
Dr Shailja P Wahal