PetCancerVet

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Squamous Cell Carcinoma on a Mastiff's carpus

Pretreatment view. This mass had been biopsied and proved to be a SCC. Surgical removal would have involved significant damage to the foot or even amputation of the leg. In a heavy lively dog like this there would have been noticeable interference with his lifestyle. The bulk of the mass together with the dewclaw was removed with electrosurgery with no attempt to remove margins and, after haemostasis, the dog was given Bleomycin i/v and the tumour site treated with ECT.

After 3 weeks there is some necrosis of the treatment site. He is using the leg with a limp: full use would return after 5 weeks.

16 months after treatment there is no sign of tumour locally or systemically.

Squamous Cell Carcinoma on a cat's nasal planum

Pretreatment view. The lesion was shown on biopsy to be a SCC. This is a common tumour in cats and surgical treatment would involved removal of a significant part of the cat's face. Radiotherapy has been used but needs multiple treatments and photodynamic therapy has been shown to give reponses but many recur. This cat was given Bleomycin i/v and ECT applied to the lesion and a 1 cm margin araound it. The electrode needles used were 1cm in length and at least 0.5 cm depth of penetration was achieved.

After 2 weeks the tumour is necrotic and sloughing will take place over the next 2-4 weeks.

4 months after treatment there is no sign of tumour locally or systemically. The cat was still disease free 34 months after treatment when he was euthanased with renal failure. The cosmetic result is very acceptable. Of 7 such cases treated the only one to recur was much more advanced on pesentation than this case.

Intermediate grade mastocytoma in a Collie's upper lip

This dog has a poorly defined intermediate grade MCT about 2.5 cm in diameter within his upper lip. Surgery would be difficult. He was given Bleomycin i/v and the tumour together with 2 cm margin was treated with ECT. This image shows the area immediately post treatment.

After 2 weeks there is some swelling but no convincing necrosis. A second ECT treatment with Bleomycin i/v was given

6 weeks from presentation, 4 weeks after second treatment, there is visible necrosis.

6 months after treatment there is no sign of tumour locally or systemically. The cosmetic result is very acceptable to the owner. Reconstruction of the lip would be possible. Last follow-up on this dog was 17 months post-treatment and he was still in full remission