Ganglion cysts are very common lumps within the hand and wrist that occur adjacent to joints and tendons.
How are ganglion cysts diagnosed?
The diagnosis is usually used on the location of the bump and its clinical appearance. They are usually oval or round and may be soft or very firm. Cysts at the base of the finger on the palm side are typically a very firm, pea-sized nodule that is tender to applied pressure, such as when gripping. Light will often pass through these bumps (trans-illumination) and this can assist in the diagnosis. Your physician may request x-rays in order to investigate problems in adjacent joints; cysts at the end joint of the finger frequently have an arthritic bone spur associated with them.