[An undifferentiated carcinoma of the esophagus--a case of an elderly patient].


Reported is the case of an undifferentiated carcinoma of the esophagus that had developed in an 80-year-old man. This polypoid a tumor was an elevated nodular mass, 9 x 5 cm in diameter, that had invaded the muscle layer. Microscopically, the tumor was composed of small polygonal cells with hyperchromatic nuclei that were unaffected by either Grimelius or… (More)