Hello and welcome to e health forum.
It is very unlikely for you to have basal cell carcinoma in your childhood and last for so long without any change in size or without any evidence of local progression.
There are a lot of difference between basal cell carcinoma and pilar cysts. Epidermoid and pilar cysts look like small smooth lumps under the skin surface. They are benign (non-cancerous) and usually cause no harm or problems. If required, they can usually be removed easily by a small operation done under local anaesthetic. The main reason why some people want them removed is for cosmetic reasons as they can look unsightly.
The best way forward is consulting your doctor or a dermatologist for a proper examination and diagnosis. This will clear all the doubts and apprehensions that you may be having about the lesions.