Anal Dysplasia Screening and Traditional High-Resolution Anoscopy
Anal intraepithelial neoplasia lesions may convert to anal cancer over a long interval of time. For this reason, the colorectal surgeon can often diagnose and treat anal lesions in a precancerous phase.
The first screening for squamous cell cancer of the anus is done with an anal Pap test. However, Pap test sensitivity only detects about 80% of anal lesions.
Therefore, if the Pap test is positive to high grade squamous intraepithelial lesions (H-SIL) or presents suspicious results for atypical squamous cells (ASC-US and ASC-H), a High-Resolution Anoscopy (HRA) is required.
High-Resolution Anoscopy (HRA)
HRA has high diagnostic sensitivity and allows to diagnosis of the vast majority of anal intraepithelial neoplasia lesions in an early stage. Early screening of anal cancer significantly reduces the incidence of advanced disease and the need for invasive procedures. For this reason, diagnosis and prevention play a fundamental role in the management of anal cancer and of its precursor lesions, also known as anal dysplasia.
Currently, high-resolution anoscopy (HRA) is one most effective tests for the screening and treatment of anal intraepithelial lesions and in particular of anal cancer.
Unfortunately, the low number of high-Resolution anoscopy providers makes testing not easily accessible to high risk populations.
Furthermore, traditional high-resolution anoscopy presents several issues that make this test difficult and expensive for most colorectal centers.
Traditionally HRA requires a colposcope, a piece of complex and bulky equipment originally developed for the diagnosis of cervical cancer.
A new approach to High-Resolution Anoscopy: THD® ProctoStation HRA
The THD® ProctoStation with its HRA module offers a solution to overcome the limits associated with the use of other technologies.
THD® ProctoStation HRA Module is a compact and convenient piece of equipment. It is available in a complete package providing high-definition images of the anal canal and the anorectal junction. THD® Light-Scope Procto HRA completes THD® ProctoStation HRA Module, eliminating the need for external light sources.
To learn more about the advantages of THD® ProctoStation HRA Module to perform High-Resolution Anoscopy, click here.