RESUMO
INTRODUCTION AND IMPORTANCE: Burned-out testicular cancer is a rare phenomenon to be taken into account for differential diagnosis in males presenting with retroperitoneal lymphadenopathy. CASE PRESENTATION: A 54-years-old male complaining of abdominal pain over the past several months was found on CT to have a large mass adjacent to the inferior vena cava, with the imaging features of a malignant lymphadenopathy. CLINICAL DISCUSSION: The hematologist who evaluated the case suggested a biopsy of the retroperitoneal mass: a seminoma was diagnosed on pathological examination. Then a testicular US revealed a focal peripheral hypoechoic region with no associated internal vascularization within the right testicle. CONCLUSION: This case report highlights the need for routine scrotal examination in all men presenting with an abdominal mass in order to rule out the possibility of an intra-abdominal seminoma.