The shrinking seminoma - Fact or fiction?

We report 2 cases of testicular seminoma with unusual but dissimilar clinic al presentations, which may represent different stages of spontaneous regre ssion of a primary testicular seminoma, the so-called 'shrinking seminoma', The aetiology of this phenomenon is discussed. These cases also illustrate that, like enlargement, reduction in the size of a testicle warrants inves tigation for malignancy, Copyright (C) 2000 S. Karger AG, Basel.