Abstract
INTRODUCTION: Postoperative recurrence of seminoma is often seen in lungs, liver, and retroperitoneal lymph nodes, such as the para-aortic lymph nodes. Most of these recurrences (>90%) occur in the first 3 years after orchiectomy. We report a case of a single recurrence in the seminal vesicle after bilateral radical orchiectomies for metachronous bilateral testicular seminoma. CASE PRESENTATION: A 52-year-old patient with a past history of bilateral testicular seminoma was diagnosed with left seminal vesicle metastasis by magnetic resonance imaging followed by needle biopsy 8 years after the first orchiectomy. After four cycles of bleomycin, etoposide, and cisplatin regimen were administered, FDG-18 positron emission tomography-computed tomography showed no abnormal signal in the left seminal vesicle. CONCLUSION: To the best of our knowledge, this is the first report of seminal vesicle metastasis following radical orchiectomies for bilateral testicular seminoma.