[Primary retroperitoneal mucinous cystadenocarcinoma].

Primary retroperitoneal mucinous cystadenocarcinoma is very rare disease. It is very similar to cystadenocarcinoma ovary. Histogenesis of this tumour still remains unknown. In our case report tumour was noticed in left retroperitoneum during routine ultrasound check of stomach in female patient 43 years old. CT studies of kidney, retroperitoneum and pelvis, irigography studies and gynecological examination was done additionally.