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Intraepithelial neoplasia (IEN) is the development of a benign neoplasia or high-grade dysplasia in an
Intraepithelial neoplasia (IEN) is the development of a benign neoplasia or high-grade dysplasia in an epithelium
Epithelium or epithelial tissue is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. It is a thin, continuous, protective layer of compactly packed cells with a little intercellul ...
. The exact dividing line between dysplasia and neoplasia has been very difficult to draw throughout the era of medical science. It varies between persons. In the localizations shown below, the term ''intraepithelial neoplasia'' is used to describe more accurately what was historically referred to as epithelial dysplasia. IEN is not cancer
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...
, but it is associated with higher risk for developing cancer in future. It is thus sometimes a precancerous condition.
Localizations
References
Lesion {{oncology-stub