Study of endothelin-1 and vascular endothelial growth factor in patients with cancer colon.

Purpose: The levels of endothelin-1 and VEGF were evaluated in the sera of newly diagnosed patients with cancer colon and were compared with the routinely used tumor markers; CEA and CA19.9. Their relations with some prognostic factors of cancer colon were also investigated.

Hepatitis C virus and its genotypes and Helicobacter pylori in pediatric non-Hodgkin's lymphoma: could there be a possible etiologic role?

Background: It has been recently hypothe-sized that Helicobacter pylori (H. pylori) and Hepatitis C virus (HCV) might be involved in the pathogenesis of malignant non-Hodgkin's lymphoma (NHL). However, most of the studies were carried out on adult patients.