Mohs Micrographic Surgery
Mohs Micrographic Surgery
Mohs micrographic surgery is a highly specialised surgical technique to remove certain skin tumours. These are basal cell carcinomas (‘BCCs’ or ‘rodent ulcers’) and squamous cell carcinomas (‘SCCs’). Mohs micrographic surgery offers the following advantages for the management of these malignant tumours:
- It has an extremely high cure rate. No other treatment modality can guarantee complete removal of the tumour to as high a degree of certainty. This greatly reduces the chances of any subsequent recurrence of the tumour.
- This technique ensures that an absolute minimal amount of normal tissue is sacrificed. This is of immense importance around the eyes. This also ensures that the reconstructive surgery required to deal with the ensuing defect is less extensive. Conversely, the technique ensures that difficult tumours with poorly defined margins in difficult areas are not underestimated in their extent and depth and are cleared completely.
Mohs Micrographic Surgery
Why is it necessary to travel to another hospital in Manchester for this treatment?
The Mohs surgeons for this region are Dr. Nick Telfer, Dr. Vindy Ghura, and Dr Vishal Madan. They are Consultant Dermatological Surgeons based at the Dermatology Department of Salford Royal NHS Foundation Trust, Salford. They are among very few doctors in this country who have received specialist training in Mohs micrographic surgery. Their role in your management is to remove the tumour. Once this has been done you will transfer to the Face & Eye Clinic Manchester where you will undergo surgery for the reconstruction of the defect left by the Mohs surgery. This will normally take place the same day under “twilight anaesthesia“.
What happens before your reconstructive surgery?
You will visit the clinic to have a preoperative consultation with your oculoplastic surgeon. This usually lasts 40 minutes. You will be asked to complete a healthcare questionnaire before seeing me, providing information about your current and past health, about any previous eye, eyelid or facial surgery or treatments including refractive surgery or laser eye surgery. I need to know if you have a past history of any eye problems e.g. dry eyes, or if you use contact lenses. I need to know about any allergies you may have, medications you are taking (including over the counter products e.g. Aspirin, Indomethacin, Nurofen, Diclofenac or vitamin supplements), previous major surgery or illnesses, and any past dermatology history.
Please answer all questions completely and honestly as they are asked only for your own wellbeing, so that your reconstructive surgery can be planned as carefully as possible. The information is treated confidentially. If you are unsure of the names of any medications, bring them with you.
You will be told whether or not to stop any medications at this preoperative clinic visit. For example, if you are taking aspirin-containing medicines or anticoagulants, they may need to be temporarily withdrawn or reduced in dose for two weeks before the procedure as long as these are not medically essential. You might need to check this with your GP. Any anti-inflammatory medicines e.g. Ibuprofen, Nurofen must be discontinued at least 2 weeks before surgery unless they have been prescribed for a specific heath problem. (Check this with your G.P.). These medicines predispose you to excessive bleeding. Your blood pressure should also be under good control if you take medications for hypertension. This is very important.
Your vision in each eye is measured. Your eyes are examined carefully using a slit lamp (a special ophthalmic microscope). Your tear film status is determined and the back of the eyes (called the retina) is examined as well as the eyelids themselves. The rest of your face is then examined. The general state of your skin is assessed and photographs of your face and eyelids are taken before surgery so that the results of surgery can be compared with the original appearance. The photographs are confidential and can only be used for any purpose other than your own records with your specific written permission.
What will the Mohs Micrographic Surgeon do?
He will inform you of when and where your Mohs surgery will take place. This procedure is performed under a local anaesthetic and the removal of the tumour takes place in stages. There is a waiting period between each stage of approximately 1 hour during which time you will be resting in a waiting area, with a temporary bandage in place. Do not eat or drink anything from 8.00 a.m. (at least 6 hours before your planned reconstructive surgery at the Face & Eye Clinic, Northenden, Manchester where your reconstructive surgery will be performed under local anaesthesia with intravenous sedation by an anaesthetist – “twilight anaesthesia“). You may have a drink of water up to 2 hours before the reconstructive surgery but nothing else.
The procedure may take anything from 1 hour to most of the morning to perform, and once the procedure has been completed you will transfer to the Face & Eye Clinic, Northenden, Manchester.
We would like you to be as comfortable as possible while you are waiting in between stages, so you might like to:
- Bring something to read
- Bring a friend (but not the whole family!)
What will happen when I arrive at the Face & Eye Clinic?
You will be seen by the nursing staff initially. The surgical wound will be carefully examined by your surgeon to determine precisely what type of reconstructive surgery will be required. This will be discussed with you. This will usually be performed under a local anaesthestic in the operating theatre. If you wish, the anaesthetist who will be monitoring you during the surgery will give you some sedation to help you relax (“twilight anaesthesia”).
Very occasionally, if the defect is very large, this surgery will be performed under general anaesthesia at a local private hospital instead. This will be discussed with you. Admission to hospital is not necessary if local anaesthesia with or without sedation is required but if admission to hospital is required because you live some distance away, or you live alone, or because you would prefer to, please bring an overnight bag so that you are prepared to stay with us if necessary.
What will happen following the surgery at the Face & Eye Clinic?
You will be discharged home within an hour of the completion of the surgery. Pressure dressings over the eye along with a bandage around the head may be kept in place for a few days and arrangements will be made for you to attend the clinic a few days to a week later for the dressings to be removed by the nurses. You will then attend again a week later for your sutures to be removed.
If you have any queries about the reconstructive surgery arrangements at the Face & Eye Clinic please leave a message for our secretary at the contact address below:
The Face & Eye Clinic
2 Gibwood Road
Manchester M22 4BT
Tel: 0161 947 2720
Unless you have been told otherwise please do not use aspirin or any aspirin containing medications for at least 2 weeks prior to the surgery. This may include a number of arthritis medications e.g Nurofen, Voltarol, Brufen, & Indomethacin. If in doubt please ask.
Conscious sedation, also known as “twilight anaesthesia”, is a type of anaesthesia which is preferred by many patients for most of our surgical procedures. It is a very comfortable and gentle type of anaesthesia which is far less invasive than the typical general anaesthesia but at the same time highly effective. It is also of advantage for very nervous or anxious patients undergoing quite minor procedures. Typically patients sleep most of the way through their procedure and have no or very little recollection of it at all. You are looked after throughout the procedure by a specialist consultant anaesthetist who has many years of experience of this type of anaesthesia, so that your surgeon can concentrate fully on your operation.
Shortly before moving to the operating room, a small tube (cannula) is placed into a vein in the back of your hand by the consultant anaesthetist and the anaesthetic drugs are given through that. These are Midazolam (a short acting type of Valium) and Propofol, a drug which is also used for general anaesthesia but, for conscious sedation, much lower doses are used. With conscious sedation there is no breathing tube or breathing machine, just a gentle flow of oxygen given through a plastic tube within a soft sponge protector inserted into one of your nostrils. Once the sedation has been commenced a local anaesthetic solution (a mixture of Marcaine and Lignocaine) is injected into the operative area to ensure a painless procedure. Typical side effects of general anaesthesia including a sore throat and nausea are avoided. Waking up takes only a few minutes at the completion of the surgery and is usually free of any “grogginess.” This type of anaesthesia has been used safely and successfully for our surgical procedures for over 20 years.