The ganglion cyst usually appears as a bump (mass) that changes size.
It is usually soft, anywhere from 1-3 cm in diameter (about .4-1.2 inches) and doesn't move.
The swelling may appear over time or appear suddenly, may get smaller in size, and may even go away, only to come back at another time.
Most ganglion cysts cause some degree of pain,
usually following acute or repetitive trauma, but up to 35% are without symptoms, except for appearance.
The pain is usually nonstop, aching, and made worse by joint motion.
When the cyst is connected to a tendon, you may feel a sense of weakness in the affected finger.