Oxidative stress upregulates eNOS and myeloperoxidase (MPO) immunoexpression in hydrogen peroxide (H2O2) exposed HUVEC cells.

Oxidative Stress Upregulates eNOS and Myeloperoxidase (MPO) immunoexpression in hydrogen peroxide (H202) exposed HUVEC cells

CARCINOSARCOMA ARISING IN A DERMOID CYST OF OVARY: A CASE REPORT

BACKGROUND: Transformation of a cystic benign teratoma of the ovary into a "carcinosarcoma" has very rarely been reported and its histogenetic origin is still debated. CASE PRESENTATION: A case of carcinosarcoma arising from a dermoid cyst is reported. The tumor showed cystic areas delimited by normal squamous epithelium, with transitional areas through dysplastic epithelium to "in situ" and infiltrating squamous cell carcinoma (SCC). The sarcomatous component showed compact tissue composed of round cells concentrically arranged around small vessels, spindle, and pleomorphic cells with a high nuclear-cytoplasmic ratio. Positive staining for vimentin, alpha smooth muscle actin and CD10, as w…