BACKGROUND: A previously healthy 51-year-old man with two children sustained a minor testicular trauma and subsequently sought medical care for persistent discomfort. INVESTIGATIONS: Physical examination, scrotal ultrasonography, Doppler ultrasound evaluation of testicular blood flow, scrotal MRI, measurement of serum tumor markers and testosterone levels, CT of the chest, abdomen and pelvis, intraoperative frozen section analysis and final pathologic analysis. DIAGNOSIS: Bilateral testicular seminoma (clinical stage I). MANAGEMENT: The patient initially underwent radical left orchiectomy with intraoperative frozen section analysis, which returned equivocal results. Final pathologic analysis revealed a 2.5 cm left testicular seminoma without vascular invasion. After careful discussion, he ultimately underwent radical right orchiectomy; pathologic analysis revealed a 2.7 cm right seminoma with vascular invasion. Testosterone replacement therapy was initiated. After further discussion, the patient elected to undergo adjuvant abdominal radiotherapy to a total of 25 Gy. The patient showed no evidence of disease over a post-treatment follow-up period of 24 months.