chestChest cancer refers to re-occurrences in the chest wall. Hyperthermia treatment combined with radiation is very effective in treatment of chest wall recurrences. A clinical study conducted by researchers showed a sharp difference in cancer response when previously radiated breast cancers recurrent in the chest wall were given both hyperthermia and radiation therapy as opposed to radiation therapy alone. Of those patients who received the combined therapy 68.2% received a complete response from the treatment, as compared to 23.5% who received a complete response from radiation therapy alone.

Hyperthermia dramatically improves treatment results for chest wall recurrences by 44.7%.

x-ray of chest

Tumor response and control (freedom from local relapse) were compared in two non-randomized groups of patients with recurrences from carcinoma of the breast (95% in the chest wall and 5% in the axillary or supraclavicular lymph nodes) receiving treatment at the Mallinckrodt Institute of Radiology. One group, comprising 48 patients treated between March 1978 and December 1984, received varying doses of irradiation (2000-4000 cGy in fractions of 400 cGy every 72 hours) followed by local microwave hyperthermia (41-43 degrees C, 30-60 min). Irradiation was usually delivered with electrons ranging from 9 to 16 MeV. Hyperthermia was administered with 915 MHz external microwaves. The second group of 116 patients, with lesions similar to those treated with hyperthermia and irradiation, were treated with irradiation alone between January 1964 and December 1984. Doses of irradiation ranged from 2000 to 6000 cGy, usually delivered in daily fractions of 200-300 cGy TD. Irradiation was administered with Cobalt-60, 4 MeV photons or electrons (9-13 MeV) and occasionally with superficial X-rays.

Patients with lesions 1-3 cm in diameter treated with irradiation and hyperthermia exhibited a complete tumor response rate of 80% (12/15) while patients receiving irradiation alone had a complete response rate of 33% (P = 0.04, Fisher exact test, two tail). The complete response rate for tumors larger than 3 cm treated with irradiation and heat was 65% (13/20) compared to 42% (18/43) for lesions receiving irradiation alone (P = 0.1, Fisher exact test, two tail).

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