Neoplasm of Esophagus
A neoplasm is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is uncoordinated with that of the normal surrounding tissue, and persists in growing abnormally, even if the original trigger is removed. This abnormal growth usually forms a mass, when it may be called a tumor.
Dysphagia is produced when tumor exceeds the diameter of 5 cm. Barium swallow shows an ovoid filling defect.Classification of Neoplasm of Esophagus