MedGen

An invasive adenocarcinoma confined to the mucosa or mucosa and submucosa of the gastric wall. The regional lymph nodes may or may not be involved. It usually occurs in the lesser curvature. The 5-year survival rate following resection is between 80 percent and 95 percent, and remains high even when lymph node metastases are present. [from NCI]

Arrest of lung development in the cananicular stage (weeks 18 to 26 of human gestation) resulting in simplified acinar spaces, frequently with abundant intervening mesenchyme and no alveoli. In later arrest growth stages early saccular formations may be seen. May resemble the lobular maldevelopment often seen in alveolar capillary dysplasia/misaligment of the pulmonary veins without vein misalignment or marked hypertensive changes of the pulmonary arteries. [from HPO]

A pathological process with signs indicating it may become cancerous. Representative examples include leukoplakia, dysplastic nevus, actinic keratosis, xeroderma pigmentosum, and intraepithelial neoplasia. [from NCI]