MONDO_0018504 (undifferentiated carcinoma of stomach) can be described as follows. A carcinoma that arises from the stomach and is characterized by the absence of microscopic features of glandular or squamous differentiation. Also known as: Gastric undifferentiated carcinoma, anaplastic carcinoma of stomach, anaplastic carcinoma of the stomach, anaplastic gastric carcinoma, stomach undifferentiated carcinoma, undifferentiated carcinoma of the stomach, undifferentiated gastric (stomach) cancer, undifferentiated gastric carcinoma.