Endometriosis as a risk factor for colorectal cancer

Abstract

Endometriosis is a common benign disease in women of reproductive age, it has been associated with an increased risk of various malignancies that is defi ned by certain histological criteria mainly 80% in ovary and 20% in extragonadal sites such as intestine, rectovaginal septum, abdominal wall, pleura and others; the greatest risk for colorectal cancer is women with adenomyosis or endometriosis; Several genetic alterations have been found in the risk of endometriosis associated with cancer; The symptomatology, imaging and endoscopic characteristics simulate other infl ammatory and malignant lesions that make the preoperative diagnosis of extragonadal endometriosis diffi cult. This is a review of the knowledge about endometriosis and its potential risk of malignancy, particularly with colorectal cancer.

A Review on Radiopaque Polyurethanes: Materials, Processing, and Properties

“…When an external apparatus is inserted into the human body, the positioning is dependent on the radiopacity of the device aiming to easily detect the surrounding anatomical structures. In practical applications, the radiopacity can be determined qualitatively by a medical doctor who can approve or not the apparatus by the visual aspect or quantitatively via grayscale value using a photodensitometer where the grayscale value is converted to absorbance values [19,20].…”

“…Considering dental materials, since pure aluminum's radiopacity is extremely comparable to dentin's, the International Standards Organization (ISO) emphasizes that any restorative material must exhibit radiopacity equal to or greater than pure aluminum of the same thickness [19]. Transmission densitometry is the gold standard and traditional typical method for measuring radiopacity.…”