Mucous Cysts
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Mucous cysts are a type of ganglion. They originate from the distal interphalangeal (closest to the tip of the finger) joints of fingers.
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They are filled with joint fluid that condenses over time and forms a gel.
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They form because joint fluid escapes through a small gap in the joint capsule into the cyst
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Mucous are not dangerous or cancerous. They are usually very unlikely to cause permanent harm if left untreated.
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The exact cause is unknown,
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An injury or heavy use can cause a cyst to get bigger
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A joint with arthritis is more likely to develop a Mucous Cyst
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It becomes more common with ageing.
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Most mucous cysts present with a lump.
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A small cyst may not be visible but can cause pain.
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They can fluctuate in size.
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Cyst that press on the nail bed can cause a groove in the finger nail.
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Mucous cysts can rupture. They discharge clear fluid.
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An ultrasound can confirm the diagnosis of a Mucous cyst.
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Immobilisation with brace/splint to help reduce size of ganglion and relieve discomfort, it does not necessarily ‘cure’ a cyst.
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Aspiration draining the fluid out of the cyst with a needle can help alleviate pain and reduce the size temporarily, but will not prevent the ganglion from reforming.
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Use of an anti inflammatory, for discomfort caused by a ganglion.
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If there is constant pain or discomfort
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If the cyst ruptures repeatedly.
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If the cyst
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–Stop you doing the 'things you have to do' and/or
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–The 'things you love to do' in life
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If you would prefer a definitive cure for the problem.
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If appearance is unacceptable
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This surgery is usually done under local anaesthetic
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The anaethetist commonly gives some sedation (a twilight anaesthetic)
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It is done as a day case in a hospital
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–but you cannot drive home after the procedure
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–and you should not be home alone on the night of your surgery
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A skin incision is made directly over the cyst
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The cyst is removed including the sac and an area of joint capsule where the ganglion originates.
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The wound is closed. A dressing and bandage are applied.
In Hospital
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A bandage is applied to the hand.
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It is important that the hand remains elevated ‘higher than your heart’ to help limit swelling
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If the bandage feels too tight, do not hesitate to remove it.
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It is usual to leave hospital 2-3 hrs after surgery
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At Home
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Continue to elevate your arm until swelling in your fingers subside.
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Move your fingers (making a full fist and straightening your fingers out fully about 10-20 times a day).
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Keep the wound dry covered and clean.
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If it is not uncomfortable, leave the bandage in place until your first appointment after surgery
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Blood thinning medication (if you are on any) can be started 2 days after surgery
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An appointment usually arranged with my practice nurse at about 1-2 weeks after surgery.
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The wound usually heals over 1-2 weeks and any sutures are then removed
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Self care (washing, dressing, eating) with the operated hand – usually around 5 days
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Driving: when you are able to control a steering wheel with your operated hand and you are not taking strong pain relief anymore (usually 5-10 days post surgery)
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Most moderate activities (equivalent to lifting a pot of the stove or pouring a full kettle) can usually be achieved by 4-6 weeks,
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It can take 3-6 months for stiffness and deep scarring in the site of the operation to resolve.
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Golf, fishing, cycling etc.: usually around 6-12 weeks, but it can be longer (3 months)
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Infection
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Stiffness of the joint (wrist/finger). You will be given some exercises to do at home, but may need hand therapy.
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It very occasionally happens that the tendon that straightens the joint fails due to the surgery, and it may can result in the tip of the finger drooping.
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It is common to have a bit of numbness next to the scar. Sometimes the scar can be very sensitive for a long time
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Recurrence, the excision may be unsuccessful and need to be done again.
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Very rarely (around one in a thousand)a severe pain reaction , (CRPS) can develop, which can be disabling for years.
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An anaesthetic can have complications, such as nausea, heart and lung problems. Please discuss it with your anaesthetist before the operation.
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Full recovery is usually expected.