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  • Title: Post-orchiectomy radiotherapy for stages I and II testicular seminoma.
    Author: Dosmann MA, Zagars GK.
    Journal: Int J Radiat Oncol Biol Phys; 1993 Jun 15; 26(3):381-90. PubMed ID: 7685748.
    Abstract:
    PURPOSE: In 1984 the following changes were made in the management of testicular seminoma at The University of Texas M.D. Anderson Cancer Center: (1) abdominopelvic computerized tomography replaced the bipedal lymph-angiogram for evaluating retroperitoneal nodes; (2) elective mediastinal radiation was totally abandoned; (3) patients with abdominal adenopathy < 10 cm were classified as having Stage IIA disease. This report evaluates the impact of these management policy changes on disease outcome. METHODS AND MATERIALS: Between 1960 and 1991, 350 patients with Stages I or II testicular seminoma received post-orchiectomy radiation. The 241 patients treated prior to 1984 constitute our old series, and the 109 patients treated since then are our new series. The outcomes in the new series were compared to those in the old series. RESULTS: The distribution of patients by stage was Stage I, 282 (old series, 190; new series, 92); Stage IIA, 55 (old series, 39; new series, 16); Stage IIB, 13 (old series, 12; new series, 1). The freedom-from-relapse at 5 years correlated with stage: Stage I, 97%; Stage IIA, 87%; Stage IIB, 69%. Elevated post-orchiectomy chorionic gonadotropin levels or involvement of the spermatic cord were adverse for disease relapse in Stage I but not Stage II disease. Patients with Stage I disease fared extremely well in both series (freedom-from-relapse 97%); the outcome for patients with Stage IIA was significantly worse in the new series (5-year freedom-from-relapse 73% vs. 92%) because of a 20% actuarial incidence of apparently solitary left supraclavicular nodal relapse. Although elective mediastinal radiation in the old series prevented this failure pattern, such treatment appeared to significantly decrease the survival of patients older than 40 years. CONCLUSIONS: (1) Abdominopelvic computerized tomography scanning is adequate for the evaluation of abdominal lymph nodes in patients with seminoma; (2) Post-orchiectomy radiation to the para-aortic and ipsilateral hemipelvic regions remains the treatment of choice for patients with Stage I disease; (3) Patients with Stage IIA disease experience a 20% relapse rate especially in the left supraclavicular fossa and we recommend elective radiation to this site delivered concomitantly with para-aortic irradiation.
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