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Parathyroid cancer is very rare and is usually treated with surgery. Learn about the diagnosis, risk and genetic factors, staging, treatment, and management of parathyroid cancer in this expert-reviewed summary.

Cancer Genetics Overview discusses hereditary cancers and the role of genetic variants (mutations). Get information about genetic counseling, familial cancer syndromes, genomic sequencing, germline and somatic testing, ethical and legal issues and more in this summary for clinicians.

Mistletoe, a semiparasitic plant that grows on several types of trees such as apple, oak, pine and elm, is commonly used in cancer patients in Europe. Read about laboratory and human studies of extracts, such as Iscador and Eurixor, and their effects on quality of life, survival and symptom relief 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.

Treatment options for children with craniopharyngioma include surgery, radiation therapy, cyst drainage, intracavitary instillation therapy, and immunotherapy. Get detailed information about treatment of newly diagnosed and recurrent childhood craniopharyngioma in this summary for clinicians.

Treatment options for children with astrocytomas include observation, surgery, chemotherapy, radiation therapy, and targeted therapy. Get detailed information about the treatment of newly diagnosed and recurrent childhood astrocytomas in this summary for clinicians.

Cancell, Cantron, and Protocel have been promoted by its manufacturers as an effective therapy for cancer and other diseases. No animal or human study has been published in a peer-reviewed scientific journal to show safety or effectiveness in treating cancer. Learn more in this clinician summary.

Coenzyme Q10 is a dietary supplement, and use of it as a treatment for cancer in humans has been investigated in only a limited manner. Get detailed information about Coenzyme Q10 use in cancer in this summary for clinicians.

Recommended intakes and sources of magnesium, effects of deficiency and excess, groups at risk of inadequacy, and interactions with medications.

Find out what vitamin C is and what it does in your body, what foods provide it, and about vitamin C supplements.