AMED3001 Cancer
Cancer Facts, Impact & the Hallmarks of Cancer
Week 1 of Module 1 sets up the whole unit. It defines what cancer is — uncontrolled proliferation and dysregulated homeostasis arising from a single cell with DNA damage — separates benign from malignant, fixes the epidemiological vocabulary (incidence, prevalence, the survival metrics) and introduces the organising framework the exam returns to again and again: the hallmarks of cancer. Expect MCQ and short-answer questions on definitions, nomenclature and the hallmarks in both the mid-semester quiz (20%) and the final (50%, confirm on Canvas).
What this chapter covers
- 01What cancer is: uncontrolled proliferation / dysregulated homeostasis; cancer arises from a single cell with critical DNA damage
- 02Benign vs malignant: expansile vs infiltrative growth; malignant spreads via blood and lymph
- 03Cancer nomenclature: carcinoma (epithelial), adenocarcinoma (glandular), sarcoma (mesenchymal), leukaemia/lymphoma/myeloma
- 04Incidence (new cases in a period) vs prevalence (total living with disease at a point in time)
- 05Survival metrics: overall survival (OS), disease-free survival (DFS), progression-free survival (PFS)
- 06The cancer journey and general warning signs; the global burden and modifiable risk factors
- 07The hallmarks of cancer (Hanahan & Weinberg) — the framework for the entire unit
Incidence vs prevalence — a definition question worth easy marks
- +1Incidence = the number of NEW cases diagnosed in a defined period (usually a year). Here the 25,000 new diagnoses in the year is the incidence.
- +1Prevalence = the TOTAL number of people living with the disease at a given point in time, regardless of when they were diagnosed. Here the 100,000 women currently living with breast cancer is the prevalence.
- +1Prevalence exceeds incidence because it accumulates survivors from many years of diagnoses: people diagnosed in previous years who are still alive stay in the prevalence pool, so a disease with good survival builds a large prevalence from a modest annual incidence.
Key terms
- Neoplasm
- An abnormal mass of tissue formed when cells proliferate more than they should or fail to die when they should; the ‘-oma’ suffix denotes a tumour.
- Benign vs malignant
- Benign tumours grow expansively with regular borders and do not invade or spread; malignant tumours (cancers) grow infiltratively and can spread via blood and lymph.
- Carcinoma
- A cancer arising from epithelial cells; an adenocarcinoma forms glands. Sarcomas, by contrast, arise from mesenchymal/structural tissues (bone, muscle, fat).
- Incidence
- The number of new cases of a disease diagnosed in a defined period, usually one year.
- Prevalence
- The total number of people living with a disease at a given point in time, regardless of when they were diagnosed.
- Hallmarks of cancer
- The set of acquired capabilities that define a malignancy (sustained proliferation, evading growth suppressors, resisting death, replicative immortality, angiogenesis, invasion/metastasis, deregulated metabolism, immune evasion), enabled by genome instability and tumour-promoting inflammation.
Cancer Facts, Impact & the Hallmarks of Cancer FAQ
Is a benign tumour cancer?
No. A benign neoplasm can grow large but has regular borders, stays in its primary location and does not invade surrounding tissue or metastasise. Cancer means a malignant neoplasm — one that can invade local tissue and spread via blood and lymph. The distinction is a common definition MCQ.
Why are the hallmarks of cancer worth learning early?
They are the framework the whole unit hangs on: every later topic — driver pathways, angiogenesis, metastasis, immune evasion, therapy targets — maps onto one or more hallmarks, so knowing them lets you organise short-answer responses and spot what an MCQ is really testing.
What is the difference between incidence and prevalence?
Incidence counts new cases over a period; prevalence counts everyone living with the disease at a point in time. Because prevalence accumulates survivors from many years, a cancer with good survival can have a high prevalence but a modest annual incidence.
Can AI help me learn the hallmarks of cancer in AMED3001?
Yes — Sia can recite and explain each hallmark with a worked example, quiz you on which pathway or therapy maps to which hallmark, and check your short-answer wording. It explains the method and checks your reasoning; it does not sit your quiz or exam for you, and USyd academic-integrity rules apply.
Exam move
Nail the definitions first — cancer, benign vs malignant, the carcinoma/sarcoma/leukaemia nomenclature, incidence vs prevalence and OS/DFS/PFS — because they are the easy, high-frequency MCQ marks in both the mid-semester quiz and the final. Then commit the hallmarks of cancer to memory as your master framework and practise slotting each later topic onto a hallmark. Ask Sia to test you on definitions and to explain any hallmark a different way when it won't stick; confirm assessment details on Canvas.
Working through Cancer Facts, Impact & the Hallmarks of Cancer in AMED3001? Sia is AskSia’s AI Biology tutor — ask any AMED3001 Cancer Facts, Impact & the Hallmarks of Cancer question and get a clear, step-by-step explanation grounded in how AMED3001 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.
