What you need to know
- Understand basic cancer vocabulary.
- Separate stage, grade, and metastasis.
- Learn common treatment and supportive-care terms.
Plain-English introduction
Cancer occurs when abnormal cells grow and can invade or spread. Oncology is the field of cancer care. Cancer terms can be emotionally heavy, so clear language matters.
Not every tumor is cancer. Benign tumors do not invade or spread like malignant tumors, though they can still cause problems depending on location.
Full lesson
Malignant means cancerous with the ability to invade and potentially spread. Metastasis means cancer has spread from its original site to another part of the body. Staging describes extent of disease. Grading describes how abnormal the cells look and sometimes how aggressive they may behave.
Diagnosis often involves imaging, labs, biopsy, pathology, and molecular testing. A biopsy removes tissue or cells for examination. Pathology reports help classify the cancer and guide treatment decisions.
Treatment may include surgery, radiation therapy, chemotherapy, immunotherapy, targeted therapy, hormone therapy, or combinations. Palliative care focuses on symptom relief and quality of life and can be used alongside treatment, not only at the very end.
How to think through questions
- Identify the cancer type and original site.
- Separate stage from grade.
- Learn the treatment category and goal.
- Remember supportive care: pain, nausea, fatigue, nutrition, infection risk, and emotions.
Key terms to know
- Benign
- Not cancerous in the invasive/metastatic sense.
- Malignant
- Cancerous; able to invade and potentially spread.
- Metastasis
- Spread of cancer from the original site.
- Stage
- Extent of cancer in the body.
- Grade
- How abnormal cancer cells look and may behave.
- Biopsy
- Removal of tissue/cells for examination.
- Immunotherapy
- Treatment that helps the immune system target cancer.
Common mistakes
- Confusing stage and grade.
- Assuming palliative care means giving up.
- Thinking all chemotherapy side effects are the same.
- Ignoring infection risk when immunity is low.
Memory hooks
- Stage = spread/extent. Grade = cell appearance/aggression.
- Palliative care supports quality of life.
- Biopsy gives tissue truth.
Mini quiz
- What is metastasis?Cancer spread from the original site to another part of the body.
- What is the difference between stage and grade?Stage describes extent/spread; grade describes cell appearance/aggressiveness.
- What is a biopsy?Removal of tissue or cells for examination.
Quick review checklist
- I can define benign, malignant, and metastasis.
- I can separate stage and grade.
- I know palliative care can be supportive during treatment.