Depending on the size, the cyst may feel firm or spongy. It occurs mainly on the back of the hand, wrist joint, or on the palm side of the wrist. Rarely, it grows on the base of the fingers on the palm, fingertips, on the knee and ankle, or on the foot. Also known as the Bible cyst, it is more commonly seen to occur in women, especially between the ages of 20-40.