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Levels of Evidence for Cancer Screening and Prevention Studies explains how to weigh the strength of the evidence obtained in cited research studies. Get detailed information on this formal ranking system in this summary for clinicians.

Esophageal cancer screening is not currently considered to be a routine part of cancer screening. Not all screening tests are helpful, and many have risks. Learn more about esophageal cancer risk factors and tests to detect it in this expert-reviewed summary.

Essiac/Flor Essence are herbal tea mixtures that are marketed worldwide as dietary supplements, and sometimes used by cancer patients. No controlled data are available from human studies to suggest that they are effective in the treatment of patients with cancer. Learn more in this clinician summary.

Spirituality and religion help patients, families, and caregivers cope with cancer and spiritual distress. Learn how religious and spiritual needs are met during treatment and improve a patient’s quality of life in this expert-reviewed summary.

Familial prostate cancer is associated with certain inherited gene mutations (variants). Learn about the hereditary prostate cancer genes, genetic testing, clinical management, and psychosocial issues in this expert-reviewed summary.

Nutrition in cancer care can be challenging due to the cancer itself and/or its treatment. Learn about nutrition support, diets, supplements, medicines, and experts who can help treat nutrition issues in this expert-reviewed summary.

“Selected Vegetables” and “Sun’s Soup” refer to several different mixtures of vegetables and herbs that have been studied as treatments for cancer. Neither has been approved by the FDA for the treatment of cancer or any other medical condition. Get detailed information in this clinician summary.

Nutrition in cancer care can be affected by the tumor or by treatment and result in weight loss, malnutrition, anorexia, cachexia, and sarcopenia. Get information about strategies to screen, assess, and treat nutritional problems, including through diet and supplements, in this clinician summary.

Renal cell cancer treatment options include surgery, radiation therapy, chemotherapy, biologic therapy, and targeted therapy. Learn more about the treatment of newly diagnosed and recurrent renal cell cancer in this expert-reviewed summary.

Extragonadal germ cell tumors treatment depends on the type and can include surgery, chemotherapy, radiation therapy, and stem cell transplant. Learn more about the diagnosis and treatment of extragonadal germ cell tumors in this expert-reviewed summary.