Thanks for your query.
It is better to get the lump inside anus to get examined by a physician. It can be a benign papilloma or internal hemorrhoids
. It can also be cancerous.
I do not think it is being caused by degenerative disc disease
During radiological examination, some tissues can overlap. The underlying bone may not be clearly seen. It is not of much clinical significance.
Regarding the chronic pain
being caused by degenerative disc disease, there are pain-killers available that can make your life better. Also try some back exercises that can strengthen your back muscles. Strong back muscles will provide support to your spine. Take calcium and vitamin supplements to make your spine strong.
Dr Vaishalee Punj