Lymphovascular invasion
Lymphovascular invasion (LVI or lymphovascular space invasion) is the invasion of a cancer to the blood vessels and/or lymphatics.
Terminology
Lymph: A clear or white fluid that travels through vessels, moves within tissues and work to keep all the parts of the body clean. Vascular: The body's network of blood vessels. When cancer spreads to lymph and vascular system, it is thus termed as Lymphovascular Invasion.
Pathology
Lymphovascular invasion, especially in
The absence of LVI in the context of proven lymph node metastasis is usually thought to be due to sampling error.[1]
Prognostic significance
The predictive value and prevalence of lymphovascular invasion is strongly dependent on the type of cancer. In other words, LVI in one type of cancer may be much less important than LVI in another type of cancer.
Generally speaking, it is associated with lymph node metastases[2][3] which themselves are predictive of a poorer prognosis.[4] In the context of (histologically) proven lymph node metastases, LVI may have less prognostic significance or no prognostic significance.
Breast cancer
Whether LVI is a significant prognostic factor in breast cancer is widely debated, and there is no clear consensus.[5][6]
Urothelial carcinoma
In
Colorectal cancer
In sporadic