title: Intraoperative interstitial hyperthermia in conjunction with intraoperative radiation therapy in a radiation-resistant carcinoma of the abdomen: report on the feasibility of a new technique.
abstract: The application of a new technique of intraoperative interstitial hyperthermia (IOHT) and intraoperative radiation therapy (IORT) was investigated for unresectable abdominal carcinoma. A 43-year-old white male presented with severe back pain due to metastatic adenocarcinoma in the left paravertebral area, producing erosion of the body of T12. The disease had not responded to external beam radiation therapy. The tumor was approached through a thoraco-abdominal incision and IOHT was delivered via interstitial electrodes. Temperature was monitored at 16 locations within the tumor. An LCF hyperthermia unit was utilized to deliver RF power and produced a treatment temperature of 43 degrees C for 60 minutes uniformly throughout the treatment volume. Immediately following hyperthermia treatment, the lesion was treated with 15 meV electrons via IORT to a tumor dose of 25Gy. The patient recovered without complication and had complete relief from pain. Posttreatment CT scans have demonstrated control of disease over a 5-month follow-up period. A clinical pilot study has been established to further investigate the application of this combination therapy.
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000556:secondary / Q000628:therapy*; D000328:Adult; D003131:Combined Modality Therapy; D006801:Humans; D006979:Hyperthermia, Induced / Q000379:methods*; D007432:Intraoperative Period; D008297:Male; D010148:Intractable Pain / Q000628:therapy; D011836:Radiation Tolerance; D011859:Radiography; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary / Q000628:therapy*; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging*