Neoplasm

Neoplasm (from ancient Greek νεο- neo-, "new" + πλάσμα plasma, "formation", "creation") is an abnormal mass of tissue as a result of neoplasia. Neoplasia is the abnormal proliferation of cells. Prior to neoplasia, cells often undergo an abnormal pattern of growth, such as metaplasia or dysplasia. However, metaplasia or dysplasia do not always progress to neoplasia. The growth of neoplastic cells exceeds, and is not coordinated with, that of the normal tissues around it. The growth persists in the same excessive manner even after cessation of the stimuli. It usually causes a lump or tumor. Neoplasms may be benign, pre-malignant (carcinoma in situ) or malignant (cancer).

In modern medicine, the term tumor means a neoplasm that has formed a lump. In the past, the term tumor was used differently. Some neoplasms do not cause a lump.

Read more about NeoplasmTypes, Difficulty of Definition, Neoplasia Vs. Tumor

Other articles related to "neoplasm, neoplasms":

Hepato-biliary Diseases - Liver Tumours
... Malignant neoplasm of liver and intrahepatic bile ducts ... frequent forms are metastatic malignant neoplasm of liver) liver cell carcinoma hepatocellular carcinoma hepatoma cholangiocarcinoma hepatoblastoma angiosarcoma of liver Kupffer cell sarcoma other sarcomas of ...
Neoplasm - Neoplasia Vs. Tumor
... medical and non-medical, uses tumor as a synonym of neoplasm ... Some neoplasms do not form a tumor ...
List Of Me SH Codes (C04) - MeSH C04 --- Neoplasms - MeSH C04.697 --- Neoplastic Processes - MeSH C04.697.650 --- Neoplasm Metastasis
... lymphatic metastasis MeSH C04.697.650.645 --- neoplasm circulating cells MeSH C04.697.650.830 --- neoplasm seeding MeSH C04.697.650.895 --- neoplasms, unknown primary ...
List Of Me SH Codes (C23) - MeSH C23 --- Pathological Conditions, Signs and Symptoms - MeSH C23.550 --- Pathologic Processes - MeSH C23.550.727 --- Neoplastic Processes
... cell transformation, viral MeSH C23.550.727.160 --- cocarcinogenesis MeSH C23.550.727.645 --- neoplasm invasiveness MeSH C23.550.727.645.500 --- leukemic infiltration MeSH C23 ...
Gonadal Tissue Neoplasm
... A gonadal tissue neoplasm is a tumor having any histology characteristic of cells or tissues giving rise to the gonads ... A gonadal tissue neoplasm should not be confused with a urogenital neoplasm, though the two topics are often studied together ...