Mixed neuroendocrine-non-neuroendocrine neoplasm (minen) of the duodenum: a rare clinical case

Abstract

The study presents a rare case of mixed neuroendocrine-non-neuroendocrine neoplasm (MiNEN) of the duodenum in a somatically aggravated patient. Endoscopic, ultrasound, and CT diagnostic studies, which were performed during hospitalization for examination, could not unequivocally detect the exact organ location of the tumor. Due to the prevalence of liver metastasis processes, surgical methods of treatment were not indicated. The final diagnosis of a rare type of malignant neoplasm was made only by the results of a postmortem examination.