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  2. Causes of cancer - Wikipedia

    en.wikipedia.org/wiki/Causes_of_cancer

    Ionizing radiation may be used to treat other cancers, but this may, in some cases, induce a second form of cancer. [74] Radiation can cause cancer in most parts of the body, in all animals, and at any age, although radiation-induced solid tumors usually take 10–15 years, and can take up to 40 years, to become clinically manifest, and ...

  3. Carcinogenesis - Wikipedia

    en.wikipedia.org/wiki/Carcinogenesis

    The central role of DNA damage and epigenetic defects in DNA repair genes in carcinogenesis. DNA damage is considered to be the primary cause of cancer. [17] More than 60,000 new naturally-occurring instances of DNA damage arise, on average, per human cell, per day, due to endogenous cellular processes (see article DNA damage (naturally occurring)).

  4. Nuclear atypia - Wikipedia

    en.wikipedia.org/wiki/Nuclear_atypia

    There are bacteria, as well as an inflammatory response of neutrophils, providing a cause for the changes. Nuclear atypia refers to abnormal appearance of cell nuclei. It is a term used in cytopathology and histopathology. Atypical nuclei are often pleomorphic. Nuclear atypia can be seen in reactive changes, pre-neoplastic changes and malignancy.

  5. Benign tumor - Wikipedia

    en.wikipedia.org/wiki/Benign_tumor

    The cells in tubular adenomas, like most tumors that frequently progress to cancer, show certain abnormalities of cell maturation and appearance collectively known as dysplasia. These cellular abnormalities are not seen in benign tumors that rarely or never turn cancerous, but are seen in other pre-cancerous tissue abnormalities which do not ...

  6. Cancer - Wikipedia

    en.wikipedia.org/wiki/Cancer

    Ulceration can cause bleeding that can lead to symptoms such as coughing up blood (lung cancer), anemia or rectal bleeding (colon cancer), blood in the urine (bladder cancer), or abnormal vaginal bleeding (endometrial or cervical cancer). Although localized pain may occur in advanced cancer, the initial tumor is usually painless.

  7. Atypical pulmonary carcinoid tumour - Wikipedia

    en.wikipedia.org/wiki/Atypical_pulmonary...

    Atypical pulmonary carcinoid tumour is a subtype of pulmonary carcinoid tumor. [1] It is an uncommon low-grade malignant lung mass that is most often in the central airways of the lung. It is also known as "atypical lung carcinoid tumour", " atypical lung carcinoid" or "moderately differentiated neuroendocrine carcinoma".