[Rare metabolic and cerebral complications after polychemotherapy of a testicular tumor].

In a 21-year-old patient with a tumor of the right testis, CT indicated a pathologically altered lymph node in the interaortocaval region. After high inguinal orchiectomy we performed a modified retroperitoneal lymph node dissection and monitored its success by immediate section for microscopic examination. Pathohistological investigation yielded immature teratoma. The patient was given two courses of adjuvant polychemotherapy containing cisplatin. Two days after the conclusion of the second course he was readmitted with grand mal epilepsy and visual agnosia. Two months later another grand mal epileptic fit occurred. The patient also suffered from marked metabolic disorders, such as hypokalemia, hyperreninism, hyperaldosteronism, kaliuresis, and hypertension. We consider these to be toxic side effects of cisplatin resulting in nephropathy. Evidence of cisplatin-induced encephalopathy was obtained by NMR tomography and EEG which indicated barrier disorders. Symptoms were relieved and continuous normalization of blood pressure, potassium level, and water and electrolyte balance was achieved by the administration of potassium substitution, ACE inhibition, and an aldosterone antagonist. The patient has since remained in a stable condition.