A pony was presented with a 1.5cm lesion under his left eye. It was not painful or causing him any direct trouble. However, it was fast growing and ulcerating. 3 biopsies (small sections) were taken using sedation and local anaesthetic. These were sent to the laboratory.
The lab analysis showed the lesion to be a "Mast Cell Tumour". These are potentially aggressive tumour and early removal is advisable.
Since the biopsy was taken there has been a remarkable reduction in the size of the tumour. “Very occasionally a biopsy will stimulate a "useful" response and the lesion may regress. For the time being we will keep monitoring it and review the options as time goes on” says David Feneley who has been dealing with this case