Biopsy and staging
This page has four parts, in the order you use them. Part 1 is what you need to know. Part 2 says what to do, in plain English. Part 3 shows the work done once on a case that is not yours. Part 4 is your own work and where to turn it in.
Open your materials, follow the steps, then turn in your work.
Explain how a biopsy and staging move a suspicious finding toward a treatment decision.
Optional: listen or watch a unit review▸
Part 1 of 4 · Background and definitions▸
💡 Big idea: Staging combines size, -node involvement, and into one number, so that doctors can match how far the has spread to how aggressive the treatment must be.
- • A removes so pathologists can confirm malignancy and type.
- • Staging uses size, -node involvement, and to set a Roman-numeral stage.
- • Higher stage generally requires more aggressive or systemic treatment.
- • In the TNM system most hospitals use, T is the size and extent of the main , N is the number of nearby nodes that have , and M is whether the cancer has spread to distant parts of the body. Some cancers, such as blood cancers and brain tumors, use their own staging systems (NCI).
Clinical trials gate access to unproven drugs so that a whole population is not exposed to a treatment before its risks are known, which forces hard trade-offs between one patient's autonomy and everyone else's .
Staging combines size, -node involvement, and into one number, so that doctors can match how far the has spread to how aggressive the treatment must be.
Driving question: Two patients each have a breast . One is 1 cm with clean nodes; the other is 4 cm and found in three nodes. Why does the same disease send them down very different treatment paths?
What you already know: Clinical trials gate access to unproven drugs so that a whole population is not exposed to a treatment before its risks are known, which forces hard trade-offs between one patient's autonomy and everyone else's .
New idea: Staging combines size, -node involvement, and into one number, so that doctors can match how far the has spread to how aggressive the treatment must be.
- Observe or measure the relevant feature in today's lesson.
- Organize the observation with a stable evidence ID.
- Apply this rule: A screening signal changes what to investigate next; it does not automatically prove the cause.
- Choose the option the evidence supports and state the limit of the conclusion.
Real biomedical example: Two patients each have a breast . One is 1 cm with clean nodes; the other is 4 cm and found in three nodes. Why does the same disease send them down very different treatment paths?
What the evidence supports: E1 to E3 and the figure support the daily take-home when the response meets the stated success criteria.
What it cannot prove: The package does not support claims beyond this lesson's or any real patient diagnosis.
- • : A medical procedure that removes a small sample of from the body so it can be examined under a microscope for disease such as .
- • staging: Classifying how far a has grown and spread, which guides treatment choices and predicts likely outcomes.
- • : Treatment that uses powerful drugs to kill rapidly dividing cells throughout the body, though it can also harm some fast-growing healthy cells.
- • radiation: Energy that travels as waves or particles; in medicine it can image inside the body or destroy harmful cells like .
- • : A treatment that attacks specific molecules cancer cells rely on, harming those cells while sparing more healthy cells than older .
- • : Programmed, controlled cell death that the body uses on purpose, including to clear the seam between two tissues during .
- • : An unintended effect of a medicine or treatment that happens in addition to its intended benefit, ranging from mild to serious.
Use it now: Choose one decision option. Cite E1 and E3, then explain how the rule connects the evidence to your choice. This is thinking practice for the one turn-in named under Turn in, not a second submission.
Go further, optional: The source links below are optional enrichment. Every fact required for today's local evidence decision appears in this lesson package.
diagnosis and treatment planning integrate or molecular findings, stage, features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
Limit: The composite classroom case cannot support a real diagnosis, stage, prognosis, or treatment recommendation.
A screening signal changes what to investigate next; it does not automatically prove the cause.
Limit: Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
You can describe what a reveals and how staging is decided.
Limit: E3 defines the classroom product or success criterion. It is not independent scientific evidence and cannot justify a clinical or causal claim.
Today's decision · Simulated classroom evidence scenario
Your role: medical interventions team member
Decision: Your team must decide what the evidence from today's lesson supports before submitting the exit response named on today's page.
- • Send the 4 cm patient down the harder treatment path, because the bigger is the worse .
- • Wait on the treatment path until marker testing adds the features that size, nodes, and spread leave out.
- • Combine what the says the cells are with size, nodes, and spread, then set the treatment path.
Response: State one choice, cite at least two evidence IDs, explain the rule that connects them, and add one limitation. Use it inside the one turn-in named under Turn in; it is not a separate submission.
Claim ceiling: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
Reason for review: Your team must decide what the evidence from today's lesson supports before submitting the exit response named on today's page.
Context: You cannot plan treatment until you know exactly what the cells are and how far they have spread, so and staging are the pivot that turns a finding into a decision.
- • T1: Copy the diagnostic from the Know section on this page (, pathology read, check for spread, assign a stage) and define biopsy and staging in your own words.
- • T2: Read the practice pathology summary on this page and underline the size and whether spread was found. Practice summary (not a real patient): tumor 3.1 cm, margins clear, 2 of 12 nearby nodes positive, no distant disease seen on imaging.
- • T3: Use the stage table on this page to assign a stage to two practice cases. Stage table (simplified practice stages for this class, not a clinical staging system; real staging rules depend on the type of ): Stage I, a small , no nodes, no spread; Stage II, a larger tumor or a few nearby nodes positive, no distant spread; Stage III, many nearby nodes positive or growth into nearby , no distant spread; Stage IV, any distant spread. Practice cases: Case 1, the summary above; Case 2, a small tumor, no nodes positive, and a lung spot confirmed as the same cancer.
- • T4: Write one sentence on why a higher stage usually changes the .
- • T5: Submit a diagnostic- ticket listing the steps from to assigned stage.
- • E1: diagnosis and treatment planning integrate or molecular findings, stage, features, overall health, benefits, and harms; no single classroom image or marker determines the complete decision.
- • E2: A screening signal changes what to investigate next; it does not automatically prove the cause.
- • E3: You can describe what a reveals and how staging is decided.
Measurements: No patient measurement is supplied unless it appears explicitly in E1-E3 or F1. Do not invent a value.
Figure finding: Three boxes labeled T size, N nearby nodes and M distant spread, each with an empty line, with arrows feeding one empty dashed stage box, and an arrow from the stage box to an empty treatment approach box.
Uncertainty: This is a composite classroom scenario. Missing history, measurements, or confirmation tests remain unknown and limit the conclusion.
Students often think a bigger always means a higher stage and a worse . The trap: Size is only one of three factors. A small that has already spread to nodes or distant organs can be a higher stage than a larger tumor that has stayed put, because spread (), not size alone, drives the stage and the treatment.
- CER:
- Claim, Evidence, Reasoning: make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure, the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Tap the speaker to hear a term. Add two of these to your notebook glossary with a definition and an example in your own words.
Pick just 2 or 3 words from today and make them yours: write what each one means in your own words, name the context clue or evidence that helped, then give one example from what you actually did in Biopsy and staging. Try your own words first; the glossary is there if you get stuck. This is voluntary and counts as extra credit, so keep it short.
Saved on this device. Show Mr. Mendoza or add these to your notebook glossary to claim the extra credit.
Part 2 of 4 · Directions in plain English▸
2.1 Open your materials
2.2 Start the work
Copy the diagnostic workflow from the Know section on this page (biopsy, pathology read, check for spread, assign a stage) and define biopsy and staging in your own words.
Show all 5 required steps
- Copy the diagnostic workflow from the Know section on this page (biopsy, pathology read, check for spread, assign a stage) and define biopsy and staging in your own words.
- Read the practice pathology summary on this page and underline the tumor size and whether spread was found. Practice summary (not a real patient): tumor 3.1 cm, margins clear, 2 of 12 nearby lymph nodes positive, no distant disease seen on imaging.
- Use the stage table on this page to assign a stage to two practice cases. Stage table (simplified practice stages for this class, not a clinical staging system; real staging rules depend on the type of cancer): Stage I, a small tumor, no nodes, no spread; Stage II, a larger tumor or a few nearby nodes positive, no distant spread; Stage III, many nearby nodes positive or growth into nearby tissue, no distant spread; Stage IV, any distant spread. Practice cases: Case 1, the summary above; Case 2, a small tumor, no nodes positive, and a lung spot confirmed as the same cancer.
- Write one sentence on why a higher stage usually changes the treatment plan.
- Submit a diagnostic-workflow ticket listing the steps from biopsy to assigned stage.
Lost your place? Interrupted? Check whether you have defined biopsy and staging in your own words yet. If yes, go straight to the sample pathology report and underline the tumor size and whether spread was found, then assign a stage to the two example cases.
- 0-10Copy the diagnostic from this page; define and staging in own words
- 10-25Read the practice pathology summary; underline size and spread data
- 25-45Stage the two practice cases using the stage table on this page; compare with a partner
- 45-60Write the stage-to-treatment connection sentence
- 60-72Build diagnostic- ticket (ordered steps list)
- 72-80Submit ticket; preview the chemo and radiation comparison
- • A doctor suspects , but suspicion is not diagnosis.
- • The -to-staging pipeline turns a suspicious image into a treatment roadmap.
- • Today you will read a real-style pathology report and assign stages yourself.
- • This is the vocabulary every chart uses, so read it the way a clinician would.
PLTW connection and today's work
Open Activity 3.1.2 Diagnostic Imaging in myPLTW for Lesson 3.1 Detecting Cancer, the imaging that leads to a biopsy; the staging practice on this page is the John Hay version of the work and counts the same.
Today's stopping point: The debate should be complete; biopsy and staging workflow ticket due today.
PLTW activity titles identify the course connection. If your account will not open, use the posted materials for today and tell Mr. Mendoza. Do not mark an online activity complete unless you completed it.
Course connection
- Activity 3.1.2 Diagnostic Imaging
Use the turn-in directions in Part 4 of this page. Do not create a second submission unless your teacher asks for one.
Show another explanation or a smaller first step
Need help? Choose a starting point
Part 3 of 4 · Worked example▸
This is a parallel case, not your own. Read it for the order of the work, then do your own in Part 4.
1. Decision or claim I am testing: ____
2. Evidence ID and exact observation: ____
3. Second evidence ID and exact observation: ____
4. Rule that connects the evidence to my claim: ____
5. Strongest alternative or tradeoff: ____
6. Limitation or missing evidence that controls my confidence: ____
7. Revision I would make if the missing evidence changed: ____
| Case | Tumor size | Spread found | Assigned stage |
|---|---|---|---|
| Case 1 | Small, under 2 cm | No nodes, no metastasis | Stage I |
| Case 2 | Larger, grown into nearby tissue | Many nearby nodes positive, no distant spread | Stage III |
This model shows the level of evidence and organization needed to complete: A blank structure for organizing the assigned response. It contains no claim, ranking, calculation, data interpretation, or recommendation from today's task.
- Name the prompt or task.
- Answer it directly with the key evidence.
- Check that the response matches the requested format.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your diagnostic-workflow ticket in Schoology before the end of block.
A smoke alarm detects signs of fire but can also react to burnt toast.
- What does the alarm detect?
- What creates a false alarm?
- What evidence is needed before declaring a fire?
A screening signal changes what to investigate next; it does not automatically prove the cause.
Biomedical tests have measured performance and biological sampling limits that a household alarm does not capture.
- • Alarm signal maps to a test result.
- • Burnt toast maps to a .
- • Inspection maps to confirmation or the next test.
Part 4 of 4 · Your work▸
Check your work before submitting
- You'll be able to describe what a biopsy reveals and how staging is decided.
- You'll be able to connect stage to a change in treatment approach.
4.1 Turn in your work
DueCheck the Schoology assignment for this day- Hand in
- Diagnostic-workflow ticket: ordered steps from biopsy through assigned stage, plus your stage-to-treatment sentence.
How to submit and name your file
Submit as one PDF in Schoology.
In Schoology, open your course and the assignment for this lesson. Attach your file, select Submit, and check that it appears in the submission.
PDF upload helpYou get two school days for every day you were absent, so this deadline moves with you.
Today's lesson is in Schoology
Each school day has one lesson page in Schoology that holds everything for the day: the goal, the story so far, every table and data value, the numbered steps, and what to turn in. Open it first and work from it. The other rows for this day, if any, are the score line for a paper quiz or test and the John Carroll debate item; they do not add work. Check Schoology for each deadline.
- Today's Lesson · Wed 11/18 · Wk13 · The skin cancers and the ABCDE check, then two yeast strains under UV light(today's lesson page: the goal, the data, the steps, and what to turn in are all on it)
Link will not open? Open Schoology, choose your course and section, and find the title shown above.
- CompleteEvery required part of the artifact is present, nothing left blank.
- AccurateThe science and the data are correct and match the evidence.
- Scientific reasoningYou explain your claim with evidence and reasoning (CER), not just an answer.
- Professional communicationClear, organized, labeled, and written the way a clinician or scientist would.
- SubmittedGo to Schoology to turn this in. Submit one PDF. Schoology attaches your name to your upload; on the page itself, write your period and code. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
How this lesson connects
Keep using what you learned last class: Clinical trials gate access to unproven drugs so that a whole population is not exposed to a treatment before its risks are known, which forces hard trade-offs between one patient's autonomy and everyone else's safety. Today: Staging combines tumor size, lymph-node involvement, and metastasis into one number, so that doctors can match how far the cancer has spread to how aggressive the treatment must be.
Practice: try a question, then check your answer▸
Claim ceiling for this check: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
Tumor A is 5 cm with no lymph-node spread and no metastasis. Tumor B is 2 cm but has spread to distant organs. Which is the higher stage, and why?
Write an answer and pick a confidence to unlock the key.
Fast retrieval with instant answers, not the commit-then-reveal check above. Try each from memory first: write what you remember about the earlier units, then check yourself here.
Missed class or ready for more?▸
Optional practice for this unit's lab skills. Nothing in it is due today. This lesson has more than one, and they cover different skills.
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
Today is individual work you can do from home: complete the same target above, then submit your Exit ticket.
Go to Schoology to turn this in. Submit one PDF. Schoology attaches your name to your upload; on the page itself, write your period and code. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf. If you cannot get in, see Mr. Mendoza. Do not skip the work.
Class still runs. Complete today's work as this page describes (it is self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
National Cancer Institute: Types of cancer treatmentThe optional extra-credit track is open. Complete reserved-unit work from home, including virtual labs, for extra credit. Each item shows its correct submission route.
Open the extra-credit trackSources: slides, readings, and resources▸
The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.
Classroom documents for this lesson are posted in Schoology. Open Clever, then Schoology, and find each one by the name shown on its card.
Open this when the class reaches this activity and use it to complete the required lesson artifact.
Use this if you were absent, got stuck, or need another pass before you submit the lesson artifact.
Sign in to Clever with your district Microsoft account to open Schoology or myPLTW. Follow today's posted steps. If myPLTW will not open, use the posted alternative and tell Mr. Mendoza. Turn in your completed work through the Schoology assignment.
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