Referral
A 7-year-old male French Bulldog was referred to discuss radiation therapy for a right piriform lobe tumour suspected to be a glioma based on imaging characteristics.
Patient History
The patient reportedly had his first seizure in December 2016 after a rigorous walk. He was started on 45mg phenobarbital twice daily at that time and di reasonably well until a recent onset of further seizure activity in June 2017. This prompted further evaluation at a referral hospital where an MRI diagnosed an approximately 2 x 1.5cm diameter intra-axial mass in the right piriform lobe.
Observations
Given the lesion location surgery was not a viable option and the patient was referred to the oncology team for evaluation for radiation therapy. CT simulation for stereotactic radiation therapy was done on 26/6/2017. These images were fused with the MRI for radiation planning.
Outcome
The patient tolerated the treatment very well with no acute adverse effects. A follow up MRI done 3 months later showed significant mass reduction. In July 2018 (13 months post SRT) the patient had several additional seizures. A repeat MRI at this time showed the mass remained markedly reduced in size. His anti-epileptic medications were adjusted, and the seizures were controlled again. At 14 months post SRT the patient was clinically stable with a normal neurological examination. The patient passed away 21 months after diagnosis.
Stereotactic radiation therapy (SRT) 3 day course of treatment to the right piriform lobe
![cs-ico-1](https://onepetcancercare.com/wp-content/uploads/2023/05/cs-ico-1.png)
SRT was prescribed to a mass in the right piriform lobe as a non-surgical alternative.
![cs-ico-8](https://onepetcancercare.com/wp-content/uploads/2023/05/cs-ico-8.png)
24Gy in 3 fractions to the right piriform lobe Glioma
![cs-ico-3](https://onepetcancercare.com/wp-content/uploads/2023/05/cs-ico-3.png)
VMAT fields are used to provide excellent treatment, preserving healthy tissue and critical surrounding structures.
![cs-ico-4](https://onepetcancercare.com/wp-content/uploads/2023/05/cs-ico-4.png)
Treatment was planned via CT planning scan.
![cs-ico-5](https://onepetcancercare.com/wp-content/uploads/2023/05/cs-ico-5.png)
15 minute treatment time with daily image guided radiation therapy (IGRT) used to verify the accuracy and precision of treatment.