MWA of the Kidney with CAS-One IR
A 67-year-old patient with an incidental finding of a 2.3cm tumor in the lower pole of the left kidney that was discovered during a CT pelvic-leg angiography due to known obstructive arteriopathy. The tumor was treated with Microwave Ablation by following the Quality Ablation workflow with a curative intent.
![New_01](https://www.cascination.com/hs-fs/hubfs/New_01.png?width=1240&height=775&name=New_01.png)
Planning of the trajectory in axial view. In red is the lesion segmented with AI, in orange the safety margin, and in green is the simulated ablation zone
![Needle placement view](https://www.cascination.com/hs-fs/hubfs/Screenshot_10_45_40_SN2_000002.png?width=1920&height=1200&name=Screenshot_10_45_40_SN2_000002.png)
Needle placement view, where the blue line shows the initial plan, with the needle perfectly over it
Post-Ablation scan showcasing a technical success of the treatment
Video with an overview of the procedure - plan through to assessment
Name: Dr. Christophe Hälg, Dr. Annkathrin Lachner, Dr. Hans Martin Gissler, Dr. Tim Ohletz
Institution: Kantonspital Aarau, Switzerland
Patient sex: Male
Initial condition:
- Implantation of an aortobifemoral Y-prosthesis in 2008 for Leriche syndrome
- Metabolic syndrome (type II diabetes mellitus, arterial hypertension, hypercholesterolemia)
- Hypertensive cardiopathy
- A 2.3 cm lesion in the lower pole of the left Kidney was observed during a routing CT-Angiography
Treatment:
- The MDT decided for MWA with CAS-One IR for curative intent
- MWA was the chosen method of treatment, as the lesion is exophytic and would not harm any surrounding structures, nor the parenchyma.
- MWA is faster than Cryo, creates bigger ablation zones with one needle and has less heat-sink effect
- CAS-One IR was used to achieve optimal placement of the ablation probe and for documentation of adequate safety distance
- A single needle was planned in prone position, to prevent advancement through the Colon
- The needle was inserted successfully, with very minimal displacement
Result:
- Complete ablation of the tumour and clinical margin was observed
- The patient experienced no complications during the procedure
- This trajectory was safely planned and placed using CAS-One IR navigation capabilities, avoiding needle advancement through the Colon, no re-positioning and therefore resulting in less CT-Scans during the procedure
- Follow-up imaging is planned 6-months post procedure
Learn more about the stereotactic navigation system CAS-One IR.