Abstract
INTRODUCTION: Polyorchidism is a rare condition with a total number of approximately 190 cases. Malignancy was found in 6,4% of cases. CASE PRESENTATION: A 57 years old man came with a sudden and persistent painful mass in right inguinal region. The patient decided to undergo surgery with diagnosis of incarserated lateral hernia inguinal and obtained a testicular-like lump in the right inguinal canal, then the patient underwent orchiectomy. Histopathological examination revealed a soft tissue tumor with microscopic characteristic of seminoma. CT-Scan revealed metastasis to lung and liver. CONCLUSION: Attention must be given to detect malignancy in polyorchidism.