Primary malignant retroperitoneal germ cell tumour presenting with accelerated hypertension

A 42 year old man presented with accelerated hypertension and an abdominal mass that proved to be a primary malignant retroperitoneal germ cell tumour involving renal vessels. The hypertension resolved with chemotherapy. To our knowledge this is the first case of a primary malignant retroperitoneal germ cell tumour to present with accelerated hypertension.