[An extragonadal retroperitoneal endodermal sinus tumor--results of treatment and treatment sequelae in a 3-year-old...

A case of an extragonadal endodermal sinus tumour in a three-year old boy is presented. Complete resection of the retroperitoneal tumour was possible after initial chemotherapy. Combined radio-chemotherapy after tumour removal led to complete remission now lasting for more than 5 years. There was unilateral renal atrophy and diverticulum of the stomach as treatment related complications. The favourable prognosis of this tumour due to intensified treatment is discussed in relation to treatment sequelae. The interdisciplinary approach in treatment of cancer in children is emphasized.