Active clinical trials for "Precancerous Conditions"

The purpose of this study is to determine if toremifene citrate is effective and safe in the prevention of prostate cancer in men who have been diagnosed with high grade prostatic intraepithelial neoplasia (PIN).

RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development of cancer. The use of selenium may be an effective way to prevent prostate cancer in patients who have neoplasia of the prostate. PURPOSE: Randomized phase III trial to study the effectiveness of selenium in preventing prostate cancer in patients who have neoplasia of the prostate.

RATIONALE: Chemoprevention therapy is the use of certain substances to try to prevent the development of cancer. Applying topical imiquimod before abnormal cervical cells are removed may be effective in preventing cervical cancer. PURPOSE: Randomized phase II trial to study the effectiveness of applying topical imiquimod before abnormal cervical cells are removed in preventing cervical cancer in patients who have recurrent or persistent cervical neoplasia.

RATIONALE: Chemoprevention uses drugs to try and prevent development of cancer. Fenretinide may be effective in treating cervical neoplasia and preventing cervical cancer. PURPOSE: Randomized double-blinded phase III trial to compare the effectiveness of fenretinide to placebo in treating patients with cervical neoplasia.

RATIONALE: Infrared coagulator ablation may be effective in preventing the development of anal cancer in patients with anal neoplasia PURPOSE: This randomized phase III trial is studying infrared coagulator ablation to see how well it works compared to observation in preventing anal cancer in HIV-positive patients with anal neoplasia.

This randomized phase II trial is studying how well aspirin works in preventing colorectal cancer in patients at increased risk of colorectal cancer. Chemoprevention is the use of certain drugs to keep cancer from forming. The use of aspirin may prevent colorectal cancer.

RATIONALE: Diagnostic procedures, such as digital colposcopy, may help doctors find and diagnose cervical intraepithelial neoplasia. PURPOSE: This clinical trial is studying digital colposcopy to see how well it works in finding cervical intraepithelial neoplasia.

RATIONALE: Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of celecoxib may prevent or treat head and neck cancer. PURPOSE: This randomized phase II trial is studying celecoxib to see how well it works compared to placebo in preventing head and neck cancer in patients with oral leukoplakia.

RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. Inositol may be effective in preventing the development of lung cancer in patients with bronchial epithelial dysplasia. PURPOSE: This phase I trial is studying the side effects and best dose of inositol in preventing lung cancer in current or former smokers with bronchial epithelial dysplasia.

Reduction in size and number of oral premalignant lesions