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Related Experiment Videos

Deep local and regional hyperthermia with annular phased array.

S Uehara1, J Omagari, K Hata

  • 1National Hospital Kyushu Cancer Center, Department of Radiotherapy, Fukuoka, Japan.

Strahlentherapie Und Onkologie : Organ Der Deutschen Rontgengesellschaft ... [Et Al]
|October 1, 1989
PubMed
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Loco-regional hyperthermia, alone or with radiotherapy, effectively treated refractory pelvic tumors. This heat therapy achieved significant tumor response rates, demonstrating its potential in advanced cancer treatment.

Area of Science:

  • Oncology
  • Medical Physics
  • Radiation Oncology

Background:

  • Refractory tumors in the pelvic cavity pose significant treatment challenges after initial therapies.
  • Loco-regional hyperthermia offers a potential therapeutic approach for persistent or recurrent pelvic malignancies.

Purpose of the Study:

  • To evaluate the efficacy and safety of loco-regional hyperthermia, alone and combined with radiotherapy, for treating refractory pelvic tumors.
  • To assess tumor response rates and adverse reactions associated with hyperthermia treatment.

Main Methods:

  • Thirty-three patients with refractory pelvic tumors received treatment via annular phased array (APA) hyperthermia.
  • Treatment modalities included hyperthermia alone (11 patients) or hyperthermia combined with radiotherapy (22 patients).

Related Experiment Videos

  • Tumor temperatures were elevated to over 42°C in 78% of sessions, with intra-pelvic organ temperatures reaching 41-42°C.

    • Main Results:

    • Combined hyperthermia and radiotherapy resulted in a 18% complete response (CR) and 50% partial response (PR).
    • Hyperthermia alone achieved an 18% CR and 9% PR.
    • Adverse reactions included superficial pain (36%), skin burns (12%), and systemic heat stress (100% mild to moderate).

    Conclusions:

    • Loco-regional hyperthermia, particularly when combined with radiotherapy, demonstrates significant efficacy in treating refractory pelvic tumors.
    • The treatment is associated with manageable adverse effects, suggesting its clinical utility.
    • Further research into optimizing hyperthermia protocols may enhance outcomes for patients with advanced pelvic cancers.