Journal of the National Cancer Institute
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J. Natl. Cancer Inst. · Oct 1997
Comparative StudyProspective analysis of prostate-specific markers in pelvic lymph nodes of patients with high-risk prostate cancer.
Pathologic evidence of pelvic lymph node involvement is obtained in 12%-20% of patients with localized prostate cancer that exhibits high-risk features (defined on the basis of tumor size, serum prostate-specific antigen [PSA] level, or Gleason score). The rate of systemic failure (i.e., relapse) in patients with this type of prostate cancer and no pathologic evidence of regional lymph node involvement is 55%-92% within 5 years of definitive local therapy. Since reverse transcription-polymerase chain reaction (RT-PCR) methods are likely to be more sensitive than routine pathologic examination in detecting metastatic tumor cells, we compared the ability of the two approaches to detect prostate cells in the pelvic lymph nodes of patients with localized, high-risk disease. ⋯ Expression of prostate-specific markers in the pelvic lymph nodes of patients with localized, high-risk prostate cancer may indicate the presence of metastatic tumor cells. Such cells may be responsible for the high rate of systemic failure seen in these patients. Additional studies are required to determine the prognostic relevance of our findings.
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The purpose of this review is to evaluate the published literature on adherence to colorectal cancer (CRC) screening with fecal occult blood testing (FOBT) and sigmoidoscopy. Specifically, the review addresses the following: 1) prevalence of FOBT and sigmoidoscopy; 2) interventions to increase adherence to FOBT and sigmoidoscopy; 3) correlates or predictors of adherence to FOBT and sigmoidoscopy; and 4) reasons for nonadherence. Other objectives are to put the literature on CRC screening adherence in the context of recently reported findings from experimental interventions to change prevention and early detection behaviors and to suggest directions for future research on CRC screening adherence. ⋯ Fewer studies examined adherence to sigmoidoscopy. Adherence was highest in relatives of CRC cases and in employer-sponsored programs offered to workers at increased risk of CRC. At present, we know very little about the determinants of CRC screening behaviors, particularly as they relate to rescreening.