[2d testicular cancer detected during thorough after care].

Bilateral testicular occur in about 5% of patients. The time interval between the diagnosis of the first and second tumor may be more than 10 years. Because the prognosis depends on early detection of the second tumor, longterm follow-up to exclude a contralateral malignancy is mandatory. This article discusses the principle of follow-up of 208 patients with testicular tumors and the treatment of patients with bilateral testicular cancer. The role of ultrasound in the diagnosis of a possible second tumor is emphasized.