Showing posts with label cervical cancer. Show all posts
Showing posts with label cervical cancer. Show all posts

Tuesday, November 15, 2011

Getting to the Bottom of It

via Positively Aware, by Gary Bucher, MD, FAAFP

Getting to the bottom of it. Be proactive about anal health, by Doctor Gary Bucher, MD, FAAFR.I have witnessed and taken part in the many changes in HIV care over the past 25 years. At the beginning of the epidemic, silence and fear was the name of the game. It took HIV activists taking control of their health care destiny to force the medical community to treat the disease and the patient.

HIV is now a chronic treatable disease, but it has a whole new set of issues regarding conditions related to prematu cian should feel for any tender areas, thickened lesions, shallow indentations, firm masses, or other abnormalities. I also ask the patient if they have performed an anal self-exam by using their finger to feel around for any lumps or bumps inside their anus. This can help guide me when I perform the digital anorectal exam.

Anal Pap smears are performed in a similar fashion to cervical Pap smears, with the area being swabbed to collect cells, which are then examined under a microscope. They can detect abnormal cells (anal dysplasia), but the anal Pap smear may be less likely to correlate with the degree of anal dysplasia that can be seen on a biopsy of an anal lesion revealed by high resolution anoscopy (HRA). Because such specificity is lacking, and there haven’t been any evidence-based clinical trials to evaluate anal cancer screening methods in preventing anal cancer, many clinicians feel that anal Pap smears should not be done at this time. However, I agree with other experts in the field who have proposed yearly anal Pap smears for all HIV-positive individuals. If the anal Pap is normal, continued annual screening is suggested. Experts also recommend anal Pap smears every one to two years for other high-risk groups and if normal, continued screening every two or three years. If any abnormal cells are detected, HRA with biopsy is recommended. However, these guidelines may be limited by the need to train a greater number of clinicians in performing HRAs and biopsies. It is also important for these screening tests to be administered in a non-hospital setting, to maximize patient compliance with screening and follow-up.

High-risk HPV subtypes, especially 16 and 18, are associated with cervical, anal, penile, vulvar, vaginal, and oral cancers. Cervical cancer is an AIDS-defining malignancy and its incidence has been decreasing with aggressive screening and treatment of pre-cancerous lesions or higher grade cervical dysplasia. Cervical cancer affected 35-40 per 100,000 women in the general population prior to cervical cancer screening and treatment and has now decreased to about 8-10 per 100,000.

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[If an item is not written by an IRMA member, it should not be construed that IRMA has taken a position on the article's content, whether in support or in opposition.]

Thursday, May 5, 2011

HIV Drug Shuts Down Precancerous HPV-Infected Cells


The antiretroviral (ARV) drug lopinavir (found in Kaletra) is able to kill cervical cells infected with the human papillomavirus (HPV)—cells that can go on to become cancerous—according to a study published online May 5 in the journal Antiviral Therapy.

HPV is one of the most widely spread viruses in the world. Transmitted through sexual contact, some strains cause genital warts, while others can cause cells to mutate and become cancerous, thereby leading to cervical cancer, anal cancer, penile cancer and cancers of the head and neck.

Though there is now a vaccine against several strains of HPV, it can only prevent HPV. It doesn’t protect someone already infected from developing cancer. Also, HIV-positive women have much higher rates of cervical cancer than women without HIV, and cervical cancer is a leading cause of death in both HIV-positive and HIV-negative women in resource poor countries.

In announcing the new findings, the study’s senior author—Ian Hampson, PhD, from the University of Manchester in England—noted that he and his colleagues were the first to document that lopinavir could be toxic to HPV, as reported in a fall 2006 issue of Antiviral Therapy.

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[If an item is not written by an IRMA member, it should not be construed that IRMA has taken a position on the article's content, whether in support or in opposition.]

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