Rotem Shlomo Lanzman MD, Presenter: Nothing to Disclose

Rudiger Wessalowski, Abstract Co-Author: Nothing to Disclose

Oliver Mils, Abstract Co-Author: Nothing to Disclose

Philipp Heusch MD, Abstract Co-Author: Nothing to Disclose

Gerald Antoch MD, Abstract Co-Author: Speaker, Siemens Medical AG Speaker, Bayer AG Speaker, BTG International Ltd

Patric Kroepil MD, Abstract Co-Author: Nothing to Disclose

Percutaneous hyperthermia catheter allow for the placement of Bowman probes for temperature measurements inside the tumor during deep regional hyperthermia treatment. The aim of this study was to evaluate the safety and effectiveness of CT-guided placement of percutaneous hyperthermia catheter in pediatric malignancies. 

Forty pediatric patients (mean age 5.8 ± 5.6 years, range 0-18 years) scheduled for regional deep hyperthermia treatment of germ cell tumors (n=20), rhabdomyosarcoma (n=11), Ewing’s sarcoma (n=3), desmoplastic tumor (n=3), hepatoblastoma (n=1), nephroblastoma (n=1) and lymphoma (n=1) were included in this retrospective analysis. A total of 46 hyperthermia catheters were placed under CT-guidance into tumors in the pelvis (n=29), liver/upper abdomen (n=6), neck (n=3), lower limb (n=5) and vertebral column (n=3). In all patients, the tumor was approached using a 13G puncture sheath under CT-guidance and a 6F percutaneous hyperthermia catheter (Somatex, Medical Technologies) was placed via the sheath inside the tumor. The duration of the intervention, technical success, periinterventional complications and the distance of the probe within the tumor were analyzed. 

44 of 46 (95.7%) percutaneous hyperthermia catheters were placed successfully in the tumor. Mean tumor diameter was 4.7 ± 3.5 cm and the mean catheter distance within the tumor was 3.7 ± 3.3 cm. One hyperthermia catheter was placed 8 mm below a rhabdomyosarcoma in the lower limb and one hyperthermia catheter dislocated from a superficial metastasis immediately after the procedure. Mean procedure time was 39.5 ± 16.3 min. No complications were observed. 

CT-guided hyperthermia catheter placement is a safe and reliable method to support treatment control in deep regional hyperthermia for pediatric malignancies. 

Deep regional hyperthermia is a promising salvage treatment option for pediatric malignancies. CT-guidance placement of hyperthermia catheter is a safe and reliable procedure and can therefore be recommended to support temperature measurements inside the tumor during deep regional hyperthermia treatment.  

Lanzman, R, Wessalowski, R, Mils, O, Heusch, P, Antoch, G, Kroepil, P, CT-guided Placement of Hyperthermia Catheters to Support Regional Deep Hyperthermia for Pediatric Malignancies.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14015322.html