Patient, client and staff safety are our priorities when using chemotherapeutic drugs in veterinary practice. We use the most up to date and safest protocols whilst handling and administering chemotherapeutic drugs to patients by using Berner gowns and gloves and fully closed administration systems and having strict extravasation and spill protocols.
This is a relatively new treatment that can be used for the treatment of SCC in situ in cats ( squamous cell carcinoma of the ears and nose ) and superficial bladder tumours. After iv or topical application of a photosensitising agent which preferentially accumulates in cancer cells. The tumour is then exposed to light produced either by a laser or other sources of light, this activates the photosensitizer leading to the production of an active form of oxygen that destroys nearby cancer cells.
In addition to directly killing cancer cells , PDT appears to shrink or destroy tumours in two other ways. The photosensitiser can damage blood vessels in the tumour which will prevent the tumour from receiving necessary nutrients and as a result, the starved tumour will shrink. In addition PDT may stimulate the animal’s immune system to attack the tumour cells. Side effects of PDT can include sloughing of the treated areas, the pet may also be sensitive to the sun for a few weeks.