The statistically colorectal cancer is the second leading cause of mortality cancer in males, after that of the lung, both in women after breast cancer. This type of cancer is particularly suitable for an effective screening program because it is characterized by slow growth and is also characterized by a chronological sequence through the transition from adenoma polyp or tumor lesion that is on average 10 years.
Currently the early diagnosis of colorectal cancer is performed by the routine examination of faecal occult blood testing and execution of such instrument and rettosigmoidoscopia colonscopia.Quest 'last test is the most effective and sensitive but is also the most invasive, the most unwelcome to the patient and the most expensive, both of which have helped to limit its use as a screening test mass.
in recent years have sought new and improved integrated X-ray imaging techniques to optimize the evaluation of the colon and rectum are born as virtual colonoscopy, and latest addition to technology, particularly effective, the evaluation with virtual colonoscopy CAD-Colon (Computer Assisted Detection). Cad-
Colonrappresenta the latest and most sophisticated development of virtual colonoscopy, tending to the improvement and the drastic reduction of the objective limits of the same and is represented by a software that can automatically identify themselves and the formations intraluminal polypoid. This software uses the classification criteria based on the morphology of the surface of the colon and the densitometric values \u200b\u200bof attenuation.
In research studies in the laboratory but also on real populations the CAD-Colon has shown excellent results in terms of sensitivity for identifying clinically significant polyps (> 10mm) with a reasonably low number of false positivi.Per why Considering that the CAD-Colon can be used as a "second reader" in a position to assist and cooperate with the radiologist in the search for forms of colon preneoplastic.
The state of the literature revealed a sensitivity of methods including between 92 and 94% for lesions between 6 and 10 mm.
In this connection, it should report the recent alarming data on the prevalence of colorectal cancer, which state that approximately 50% of the population worldwide is colon polyps that increase progressively with increasing age. Histologically can be defined Two types of polyps: hyperplastic and early adenomatosi.I not turn into cancer representing 50% of polyps \u0026lt;5 mm and 30% of polyps between 6 and 9 mm, while the latter are transformed into carcinomas presenting a risk related their size.
The occurrence of adenocarcinoma has been estimated at 1% in polyps adenomatous smaller than 10 mm and 10% with those with size between 1 and 2 cm, and 40% in those with larger than 2 cm.
E 'then a common opinion that should be resected polyps larger than 1 cm (referred to as "advanced adenoma") then those that have a higher probability of malignant degeneration. And 'the importance of intuitive Virtual Colonoscopy CAD-Colon is able to detect 100% of lesions greater than cm.
E 'was calculated that early detection of these lesions would be able to reduce the incidence of colorectal cancer by 76% to 90% in the whole population.
done with virtual colonoscopy CAD Colon show the benefits of non-invasive method and provides more degrees of accuracy fully comparable to conventional colonoscopy, simplifies preparation by increasing their level of tolerance by the patient. For these reasons, the examination is completed, you can resume normal daily activities. The non-invasive test
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Source: http://www.cidimu.it/
