[A primary adenosquamous carcinoma of the stomach difficult to differentiate from gastric ulcer].

The case involves a 57-year-old male who complained of an upper abdominal pain when hungry. An adenosquamous carcinoma of the stomach, however, is rare, and to make such an initial preoperative diagnosis endoscopically from a biopsied specimen is extremely unusual. Thus, as can be expected, on first examination, that the patient had a grade II adenosquamous carcinoma of the stomach was not determined. Two months later, however, on second diagnosis, a primary adenosquamous carcinoma of the stomach in the interior part of the angle region was made after an endoscopic study of a biopsied specimen.