• M Akgül, A İ Arslan, and C M Yazıcı.
• Department of Urology, Faculty of Medicine, Tekirdağ Namık Kemal University, Tekirdağ, Turkey.
• Niger J Clin Pract. 2023 Nov 1; 26 (11): 172817331728-1733.

BackgroundTestis sparing surgery (TSS) has an important role in preserving the functional capacity of testicular cancer (TC). Germ cell neoplasia in situ (GCNIS) lesions in the remaining testis have a significant risk for local recurrence.AimWe aimed to evaluate the presence of satellite GCNIS lesions around the primary tumor and to measure the distance of the furthest GCNIS lesion to the primary tumor.Subject And MethodsThe radical orchiectomy specimens of patients (n = 37) with a tumor size of ≤3 cm were reevaluated by the same pathologist. The satellite GCNIS lesions located around the primary tumor were detected, and the furthest GCNIS lesion distance to the primary tumor was measured under light microscopy.ResultsThe mean tumor size was 1,9 ± 0,6 cm. The mean furthest GCNIS distance to the primary tumor was 5,08 ± 2,77 mm. A total of 19 (51,4%) patients had the furthest GCNIS lesions <5 mm, and 28 (75,6%) patients had the furthest GCNIS lesions <7 mm away from the primary lesion.ConclusionsLeaving a 5 mm safety margin during TSS would lead to excise the satellite GCNIS lesions in half of the patients. Increasing the safety margin to 7 mm would lead to excise the satellite GCNIS lesions at 75% of the patients.Copyright © 2023 Copyright: © 2023 Nigerian Journal of Clinical Practice.

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