Understanding Oncology: Neoplasms and Tumors
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Questions and Answers

What is a tumor primarily composed of?

  • Dead cells
  • Neoplastic cells (correct)
  • Healthy cells
  • Normal tissue

What is the study of tumors called?

  • Pathology
  • Oncology (correct)
  • Histology
  • Cytology

Which characteristic is most typical of a benign tumor?

  • Localized growth (correct)
  • Distant metastasis
  • Rapid, uncontrolled spread
  • Invasion of surrounding tissues

Which of the following best describes a benign tumor?

<p>A localized and well-defined growth (A)</p> Signup and view all the answers

What does 'well-circumscribed' mean in the context of a benign tumor?

<p>The tumor has clear and defined borders (C)</p> Signup and view all the answers

What field of medicine focuses on cancer?

<p>Oncology (C)</p> Signup and view all the answers

Which of the following environmental factors can contribute to genetic mutations leading to cancer?

<p>Radiation (B)</p> Signup and view all the answers

Which lifestyle choice increases the risk of cancer due to its contribution to genetic mutations?

<p>Drinking alcohol (A)</p> Signup and view all the answers

Which of the following is a viral cause of cancer?

<p>Viruses (D)</p> Signup and view all the answers

Which of the following can be described as a cause of genetic mutation?

<p>Lack of physical activity (D)</p> Signup and view all the answers

What promotes the development of cancer by creating mutations in DNA?

<p>Carcinogens (C)</p> Signup and view all the answers

Which of the following is an example of a carcinogen?

<p>Tobacco smoking (A)</p> Signup and view all the answers

What is the study of cancer called?

<p>Oncology (A)</p> Signup and view all the answers

What is the primary way that carcinogens lead to cancer?

<p>Creating mutations in DNA (C)</p> Signup and view all the answers

Besides tobacco and alcohol, which of the following can be a carcinogen?

<p>Viruses (D)</p> Signup and view all the answers

What is the term for changes in the genes that control cell growth and differentiation?

<p>Mutation (C)</p> Signup and view all the answers

Uncontrolled cell growth is a characteristic of what condition?

<p>Cancer (D)</p> Signup and view all the answers

What is the outcome of mutations in genes that regulate cell division?

<p>Uncontrolled cell division (D)</p> Signup and view all the answers

Which process is most directly disrupted by mutations in genes that control cell differentiation?

<p>The process of a cell becoming more specialized (A)</p> Signup and view all the answers

In the context of cancer, what does 'uncontrolled growth' refer to?

<p>Cell growth that is not regulated by the body (A)</p> Signup and view all the answers

What is the main goal of primary cancer treatment?

<p>To completely remove cancer from the body. (D)</p> Signup and view all the answers

What is the purpose of adjuvant treatment?

<p>To kill any remaining cancerous cells after primary treatment. (C)</p> Signup and view all the answers

Which of the following describes primary treatment?

<p>The first and main approach to eliminate cancer. (B)</p> Signup and view all the answers

When is adjuvant treatment typically administered?

<p>After the primary cancer treatment is complete. (B)</p> Signup and view all the answers

What is the ultimate goal of primary and adjuvant treatments combined?

<p>To completely eradicate cancer and prevent its return. (B)</p> Signup and view all the answers

What is the main goal of neoadjuvant treatment?

<p>To shrink a tumor before the primary treatment (D)</p> Signup and view all the answers

When is palliative treatment typically used?

<p>When primary treatment is not possible due to advanced disease (B)</p> Signup and view all the answers

Which type of treatment aims to relieve symptoms?

<p>Palliative (A)</p> Signup and view all the answers

What benefit does neoadjuvant treatment offer before surgery?

<p>It makes the surgery easier due to tumor shrinkage. (B)</p> Signup and view all the answers

What is the primary focus of palliative care when a cure is not possible?

<p>Alleviating symptoms and enhancing the patient's comfort (D)</p> Signup and view all the answers

Flashcards

Tumor

A mass formed by a group of neoplastic cells.

Oncology

The study and treatment of tumors.

Benign Tumor

Localized and well-defined tissue growth.

Localized Growth

These tumors exhibit controlled growth.

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Well-circumscribed

Distinct boundaries, easily identified and separated.

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Cancer Mutation

Alteration in genes controlling cell growth and differentiation, leading to uncontrolled growth and division.

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Uncontrolled Cell Growth

Cancer cells ignore signals to stop growing, leading to excessive proliferation.

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Uncontrolled Cell Division

Cancer cells divide rapidly and continuously, forming tumors or spreading throughout the body.

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Pathophysiology

The study of altered physiological processes due to disease or injury.

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Carcinogen

A substance or agent that can cause cancer.

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Tobacco Smoking

A carcinogen found in cigarettes and linked to various cancers.

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Alcohol

A substance that, when consumed excessively, is associated with increased cancer risk.

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Viruses

Agents that can insert their DNA into cells, potentially leading to cancer-causing mutations.

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Environmental Factors & Cancer

Factors in the environment that can lead to genetic mutations, potentially causing cancer.

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Radiation & Cancer

Exposure to certain types of energy that can damage DNA and increase cancer risk.

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Alcohol & Cancer

Linked to increased cancer risk due to its effect on cell growth and DNA.

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Viruses & Cancer

Certain of these can insert their DNA into cells, potentially causing cancer (e.g., HPV).

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Primary Treatment

The complete removal of cancer from the body as the main treatment approach.

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Adjuvant Treatment

Treatment to eliminate any remaining cancer cells post-primary treatment.

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Treatment

The process of managing a disease or condition to alleviate symptoms or achieve a cure.

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Neoplasm

Pathological new growth of tissue

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Neoadjuvant Treatment

Treatment given before the main therapy to shrink a tumor.

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Palliative Treatment

Alleviates symptoms, improving quality of life when a cure is not possible.

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Neoadjuvant Goal

Making surgery easier by reducing tumor size beforehand.

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Palliative Care Cases

Advanced stage where the cancer is too widespread for curative treatments.

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Palliative Treatment Aim

To improve patient comfort and quality of life.

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Study Notes

  • Oncology is a sub-speciality of medicine for investigation, diagnosis, and treatment of cancer or suspected cancer.

Neoplasm

  • Neoplasm refers to abnormal and excessive tissue growth.

Tumor

  • A tumor is a mass formed by a group of neoplastic cells.

Tumor Types

  • Benign tumors are localized and well-circumscribed growths.
  • Malignant tumors (cancer) involve uncontrollable tissue growth, invading and destroying surrounding tissues, and potentially spreading to distant organs without treatment.

Pathophysiology of Cancer

  • Cancer's pathophysiology involves alteration in genes that control cell growth and differentiation.
  • This alteration, mutation, leads to uncontrollable growth and division of cells.
  • Mutation results in abnormal behaviour of the cell.

Causes of Cancer

  • Cancer can be (5-10%) inherited
  • Genetic mutations (90%) are influenced by environmental and lifestyle factors.
  • Environmental factors include tobacco smoking and obesity.
  • Other environmental factors include radiation, lack of physical activity, alcohol, and viruses.

Carcinogens

  • Carcinogens are substances that promote cancer development, such as tobacco, alcohol, viruses, and radiation.
  • Carcinogens cause mutations in DNA to promote cancer development.

Metastasis

  • Metastasis is the process where malignant cells spread beyond the original cancer site.
  • Local spread involves cancer cells invading and growing directly into surrounding tissue.
  • Lymphatic spread involves cancer cells invading lymphatic vessels, moving through the lymphatic system to regional lymph nodes.
  • Hematological spread involves cancer cells invading blood vessels and spreading through the bloodstream to distant organs.

Symptoms of Oncology

  • Symptoms include weight loss and fatigue.
  • Night sweats and fever are other symptoms.
  • Symptoms vary based on the affected organ, such as a cough in lung cancer or blood in stool/feces in colon cancer.

Diagnosis of Oncology

  • A definitive cancer diagnosis requires a biopsy.
  • A biopsy involves taking a tissue sample from the tumor mass and studying it under a microscope to determine if the tumor is benign or malignant.

Determining the extent of growth of oncology

  • Staging assesses the extent of growth and spread of a tumor.
  • Staging helps decide the best treatment option.
  • Staging provides insights into the extent and outcome (prognosis) of the cancer.

Screening processes for oncology

  • Cancer screening identifies patients with cancer who do not have symptoms.
  • Early diagnosis identifies patients with cancer who have symptoms but are in earlier stages.

Treatment for oncology

  • The best treatment outcomes are achieved through early detection and diagnosis.

Types of oncology treatment

  • Primary treatment involves complete removal of cancer from the body.
  • Adjuvant treatment is designed to kill any remaining cancerous cells after primary treatment.
  • Neoadjuvant treatment is used before starting the primary treatment to shrink or decrease the size of tumor and making the surgery easier.
  • Palliative is to relieve symptoms when primary treatment is not possible due to advanced disease.

Options for cancer treatment

  • Surgery is performed to remove as much of the cancer as possible.
  • Chemotherapy uses cytotoxic drugs to kill cancer cells.
  • Radiotherapy uses radiation to kill cancer cells.
  • Immunotherapy involves drugs that stimulate the patient's immune system to fight cancer cells.
  • Hormonal therapy is used when cancer are affected by hormonal activity in the body and blocks the effect of these hormones from cancer stimulation.

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Description

Explore oncology, focusing on neoplasms and tumors. Learn about benign and malignant tumor types, the pathophysiology of cancer involving genetic mutations, and the primary causes of cancer, including genetic and lifestyle factors.

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