A testicular tumour could be diagnosed by the occurrence of a Raynaud'
s phenomenon complicated by severe digital arteritis. The arteritis ra
pidly regressed under prostacyclin therapy. Such vascular manifestatio
ns are frequent in testicular carcinoma, but they usually develop afte
r chemotherapy. To our knowledge, this is the first case where they pr
eceded the diagnosis and specific treatment of a tumour of the testis.