Week 10 Neoplasia Flashcards
As nurses, we will encounter patients with neoplastic conditions frequently, making it essential to understand the underlying pathophysiological processes and common treatment options. During this module, we will explore some common cancers, including breast, lung, bowel, prostate, and skin cancers. We will also introduce you to nursing management of a person with neoplasia.
Neoplasia
Neoplasia is the uncontrolled and abnormal growth of cells in the body that leads to the formation of tumours, or neoplasms. This growth will be excessive, uncoordinated and exceed the growth of surrounding tissue.
Neoplasms can be divided into two types, benign or malignant.
Benign neoplasms do not grow aggressively, do not invade the surrounding body tissues, and do not spread throughout the body.
Malignant neoplasms, on the other hand, tend to grow rapidly, invade the tissues around them, and spread, or metastasize, to other parts of the body.
Malignant Tumour
A mass of non-structured, new cells that invade the basement membrane and have no known purpose in the physiological function of the body. Using the vascular system, lymphatic system or through seeding and implantation, these cells will grow, invade and spread to neighbouring organs and tissues, usually causing death.
Benign tumour
New, abnormal mass of cells that do not invade unrelated tissues or organs, but may continue to grow in size abnormally. Complete recovery is expected after excision.
Metastasis
The spread of cancer cells from the site of the original tumour to distant tissues and organs throughout the body.
Staging
Classifying the extent and spread of the disease. Based on the anatomical extent rather than the cell appearance. Multiple cancers can use the same staging classifications.
Clinical Staging = stages 0, I, II, III, IV
TNM Classification system = tumour-node-metastasis
Lymphoedema
Occurs when lymphatic channels are blocked or surgically removed, and proteins and fluid accummulate in the interstitial spaces.
Palliative care
A coordinated approach to care that is both person- and family-centered, aimed at opitimising the quality of life for a terminally ill person with an active, progressive and advanced disease.
End of life care
An approach to health care which is provided in the hours, days or months before a person dies, once treatment to cure or control their life-limiting disease has stopped. This care aims to address the mental and emotional needs, physical comfort, spiritual needs and practical social needs of a dying person and their family/support.
Breast Cancer
For women, breasts are made up of milk producing lobules, ducts which carry the milk and fatty connective tissue which surrounds the lobules and ducts. For men, their breasts consist mainly of fatty connective tissue surrounding a small amount of ductal tissue.
Breast cancer occurs when abnormal cells in breast tissue grow in an uncoordinated and uncontrolled way and invade local tissue. It can occur at any age, but is more likely to occur in older adults and it can affect both women and men.
Risk Factors for Breast Cancer
Gender
Being a woman is the single, biggest risk factor → most common type of cancer affecting women
Risk concurrently increases with age and, for women, diagnosis most commonly occurs after menopause.
Up to 1000 women <40 years were diagnosed with breast cancer in 2022
Family history
Risk increased with first degree or second degree relative on same side of the family
Genetics
Single gene mutation from mother or father increases risk by 5-10%
Highest risk associated with mutations of 2 genes → BRCA1 (breast cancer gene one) and BRCA2 (breast cancer gene two)
For men, risk increased with Klinefelter syndrome
Reproductive risk factors
Early menarche → younger than 12 years
Delayed menopause → older than 55 years
Delayed age at first pregnancy → women who haven’t had a full-term pregnancy until after the age of 30 years
Number of times a woman has given birth
Testicular abnormalities and gynecomastia
Modifiable risk factors
Obesity
Smoking
High alcohol intake
Endogenous and exogenous oestrogen
Oral contraceptive pill (OCP) → until 10 years after stopping it, especially if an older woman with a faulty gene is taking the OCP.
Menopause hormonal therapy (new term for hormone replacement therapy) → increased when combined with progesterone and taken for >5 years
Non-Invasive Breast Cancers
Non-invasive breast cancers are contained in the milk ducts or lobules within the breast and have not grown into or invaded normal breast tissue. They include:
Ductal carcinoma insitu [DCIS] → most common→ starts in the milk ducts → not considered life threatening.
Lobular carcinoma insitu [LCIS] → grows in the lobules → not considered life threatening but can lead to the risk of developing breast cancer later in life.
Invasive Breast Cancers
Most common type of breast cancer:
Invasive Ductal Carcinoma (IDC) → 80% of all breast cancers → can spread to lymph nodes and potentially other parts of the body.
Invasive Lobular Carcinoma (ILC) → second most common breast cancer → mass develops in lobules and invades the basement membrane, spreading into surrounding breast tissue, lymph nodes and other parts of the body.
Paget’s disease of the nipple → rare → cancerous cells grow in the nipple or areola → nipple becomes scaly red, itchy and irritated.
Inflammatory breast cancer → rare and aggressive → fast growing cancer with high risk of metastasis → lymph channels in the skin become blocked → breast becomes erythematous, warm to touch and with a thickened appearance.
Metastatic breast cancer → aggressive and fast growing → spreading to bones, lungs, liver, lymph nodes and brain.
The clinical manifestations of breast cancer can vary from being asymptomatic to any of the following:
On self examination, a non-tender and fixed breast nodule can be palpated that is approximately 1cm in size.
Pain → any unusual pain in the breast or axilla that does not go away.
Lump or thickening → inside the breast or axilla
Asymmetrical changes in breast size and shape
Unusual nipple discharge → clear or bloody and is not breast milk
Change in the nipple such as nipple retraction, dimples, burning or itching (rash)
Flaky, thickened or discoloured skin of the breast
Dimpled, pulled or retracted area of the breast
Diagnosis
It is recommended that doctors use the triple test approach in the diagnosis of breast cancer:
a comprehensive history and clinical breast examination;
imaging → mammogram +/- ultrasound scan
a biopsy → fine-needle aspiration biopsy, vacuum-assisted core biopsy, large-core surgical biopsy or an open surgical biopsy.
Stages of breast cancer
Stages of breast cancer are numbered 0 - IV:
Stage 0 → ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS)
Stage I, IIA and IIB → early stages of breast cancer
Stage IIB, IIIA, IIIB, IIIC and IV → signify advanced (metastatic) breast cancer.
Another approach to staging breast cancer is by using the TNM system
T → tumour size
N → Lymph node status
M → Metastasis