Pilot studies of superfractionated radiotherapy and combination chemotherapy in limited oat cell carcinoma of the bronchus.

There are sound radiobiologic and suggestive clinical rationale for superfractionating the radiotherapeutic regimens employed for the therapy of rapidly growing malignancies. Oat cell carcinoma of the bronchus is such a tumor. We report our experience combining aggressive systemic combination chemotherapy with superfractionated radiotherapy for the treatment of "limited" oat cell carcinoma of the bronchus. Overall, patient tolerance was satisfactory and a complete remission rate of 74% was achieved. It remains to be proven, in a prospective randomized fashion, whether this approach is superior to current conventional management.

Hypofractionated radiotherapy for the palliation of advanced pelvic malignancy.

Forty-two patients, with a variety of advanced pelvic malignancies, have been treated with a hypofractionated radiotherapy regimen. The most common schedule was 30 Gy in three fractions at monthly intervals. This has provided effective palliation with acceptable morbidity in the select patient group treated. The results in advanced rectal and ovarian tumors were particularly encouraging. The most effective dose/fraction and interfraction interval is, at present, under active investigation within our institution.