Page 702 - WSAVA2018
P. 702

 25-28 September, 2018 | Singapore
WSVA8-0141
ONCOLOGY - ONCOSURGERY
ELECTROMAGNETIC THERMOABLATION FOR ORAL TUMORS IN DOGS
S.C. Chang1, H.J. Wang1, Y.C. Feng2, Y.P. Yang2
1National Chung Hsing University, Veterinary Medicine, Taichung, Taiwan R.O.C.
2National Chung Hsing University, Veterinary Medical Teaching Hospital, Taichung, Taiwan R.O.C.
INTRODUCTION
Thermal ablation by using electromagnetic thermotherapy system has been a promising cancer treatment modality in recent years. This system applies a high frequency alternating electromagnetic field to heat up apace the alloy needles which are inserted into and beneath the target tumor to cause denaturation
of surrounding tissues or vessels and eventually coagulative necrosis.
OBJECTIVES
Use the newly developed system called electromagnetic thermoablation (EMTA) to treat oral cancers of dogs and to investigate clinical outcome after EMTA.
METHODS
Seven client-owned dogs with oral tumors were
treated with EMTA. These tumors included 3 malignant melanomas at buccal mucosa, tongue, and hart palatine, respectively; 2 amelanotic melanomas at tongues; and 2 squamous cell carcinomas at buccal mucosa and tongue, respectively. The heat of needle reached to 90-100°C in 30 seconds and then was maintained this temperature for 270 seconds to complete a 300-second procedure. The effective area of each needle after heating was 5 mm in radius from center of needle.
RESULTS
Six tumors showed no recurrence after EMTA. The mean relapse-free interval was 327.5 days (median, 305.5 days) to the date of this abstract submitted. Only one dog with large-sized malignant melanoma at root of tongue showed recurrence at 25th day after EMTA. Side effects were self-limited and included regional pain, salivation or discharge. These dogs were well tolerated and showed good appetite after EMTA.
CONCLUSIONS
This EMTA might be used as an option of the local disease control in oral tumors of dogs, similar with the wide-margin surgery.
WSVA8-0143
ONCOLOGY - ONCOSURGERY
MINIMALLY INVASIVE THERMOABLATION AS A NOVEL THERAPY FOR MALIGNANT NASAL TUMORS IN TWO DOGS
S.C. Chang1, Y.C. Feng2, H.J. Wang1, Y.P. Yang2
1National Chung Hsing University, Veterinary Medicine, Taichung, Taiwan R.O.C.
2National Chung Hsing University, Veterinary Medical Teaching Hospital, Taichung, Taiwan R.O.C.
INTRODUCTION
Nasosinal tumors account for approximately 1% of all canine tumors. Thermotherapy has been a method
for tumor treatment by direct killing of tumor cells with coagulative necrosis. Minimally invasive thermoablation (MITA) is a new modality applies a high temperature on the specific part of the needle to treat target tumors.
OBJECTIVES
To evaluate the effects and side effects of MITA used in treating malignant nasal tumors in dogs.
METHODS
Two client-owned dogs with nasal melanoma and transitional carcinoma respectively. MITA was performed with computed tomography scan guidance under general anesthesia every 2-3 weeks. The temperature reached to 90-100oC in 60 seconds and then was maintained for 240 seconds to complete a 300-second procedure. The effective area of each needle after heating was 7.5 mm in radius from center of needle.
RESULTS
The dog with nasal melanoma had complete remission after twice MITA and showed no relapse for 445 days to the date of this abstract submitted. The dog with nasal transitional carcinoma had received 8 times of MITA and showed partial remission with progression-free interval of 407 days. Side effects were self-limited and included sneezing, nasal discharge. No major side effects were observed.
CONCLUSIONS
MITA is an effective, promising treatment of canine nasal tumor with minimal side effects.
      700
43RD WORLD SMALL ANIMAL VETERINARY ASSOCIATION CONGRESS AND 9TH FASAVA CONGRESS





























































   700   701   702   703   704