When i touch the bottom of my chin above neck i...

do i have to be worried about a chin solid ball shaped mass from years ?
no its not a thing to be worried about since its old 
what is the treatment of this solid ball ?
the treatment is usually surgical excision for such skin lesion and repair the site of the lesion 
what it might be ?

• lipoma 
• dermoid cyst 
• epidermid cyst
• cutaneous cyst

what are the diagnostic tests done ?
the doctor will exam the patient clinically and take his medical history then he will remove the cyst and take the cyst to the pathology department fot the analysis to check the content of this cyst 
what is the advice ?
we advice you to visit the dermatologist for the right diagnosis and the correct treatment