| Course | PA 512 CCM Hematology/Oncology |
|---|---|
| Week | 8 |
| Paper type | Treatment response summary |
| Length | About 920 words, 5 pages |
| Format | APA 7 student paper |
| School | Chamberlain University |
| Program | Master of Physician Assistant Studies (MPAS) |
| Updated | October 2026 |
Free sample paper for PA 512 Week 8
Treatment Response Summary: Two Retroperitoneal Nodes Measured by Short Axis Before and After Three Cycles, a 53% Fall in the Sum and Normal Markers That Do Not Make a Complete Response
Student Name
Chamberlain University
PA 512: CCM Hematology/Oncology
Instructor Name
Month Day, Year
Treatment Response Summary: Two Retroperitoneal Nodes Measured by Short Axis Before and After Three Cycles, a 53% Fall in the Sum and Normal Markers That Do Not Make a Complete Response
The Pretreatment Set, in Full
Imaging: contrast-enhanced CT of chest, abdomen and pelvis, February 12, community hospital, portal venous phase, 5-millimeter slices.
Node 1: left para-aortic, long axis 38 mm, short axis 31 mm.
Node 2: interaortocaval, long axis 21 mm, short axis 16 mm.
Lungs: clear. No other enlarged nodes. No liver lesions.
Markers on March 2, the first day of chemotherapy: AFP 655 ng/mL; hCG 9 mIU/mL; LDH 262 U/L (upper limit 250).
The Current Set, Same Order
Imaging: contrast-enhanced CT of chest, abdomen and pelvis, May 18, cancer center, portal venous phase, 2.5-millimeter slices.
Node 1: left para-aortic, long axis 19 mm, short axis 14 mm.
Node 2: interaortocaval, long axis 11 mm, short axis 8 mm.
Lungs: clear. No new enlarged nodes. No liver lesions.
Markers on May 4: AFP 7 ng/mL; hCG under 2 mIU/mL; LDH 198 U/L.
Choosing What to Follow
The summary uses RECIST version 1.1. Lymph nodes count as measurable target lesions only if the short axis is at least 15 mm, and they are measured by short axis, not long axis (Eisenhauer et al., 2009). Both nodes met that threshold at baseline, so both are target lesions, and the sum of their short axes is the measure followed. No other lesions were present.
Baseline sum of short axes: 31 + 16 = 47 mm.
Current sum of short axes: 14 + 8 = 22 mm.
Change: a decrease of 25 mm, or 53%.
Like Against Like
The two CTs were done at different centers with different slice thickness. Both were contrast-enhanced in the same phase, and a radiologist at the cancer center remeasured the February images on the same workstation using the same method, which is how the baseline values above were obtained. The difference in slice thickness is recorded because thinner slices can measure small nodes slightly more precisely; it is not large enough to change the category here.
The Category and Its Definition
Partial response: at least a 30% decrease in the sum of target lesion diameters from baseline (Eisenhauer et al., 2009). The 53% decrease meets this. Complete response requires every target node to fall below 10 mm in short axis; Node 2 at 8 mm has, but Node 1 at 14 mm has not. The category is therefore partial response, not complete response.
Markers, Reported Separately
AFP, hCG and LDH have all returned to normal. In germ cell tumors, marker normalization is an important part of judging response, and the markers here fell at the expected rate (Gilligan et al., 2010). They are reported in their own section because RECIST does not include serum markers, and combining the two would blur what each shows.
What Is Not Response
A residual 14-millimeter node with normal markers is not the same as a cure. In a nonseminomatous germ cell tumor, a residual mass after chemotherapy can contain dead tissue and scar, teratoma or living cancer, and normal markers do not separate them, because teratoma does not produce AFP or hCG. The original tumor contained 10% teratoma. This summary records the measurement and the category; what to do with the residual node is a decision for the multidisciplinary team and is outside the summary.
Why Only Two Targets
RECIST allows up to five target lesions in total and two per organ, so both nodes could be followed as targets without any choice being forced (Eisenhauer et al., 2009). Had a third enlarged node been present, the two largest that could be measured reproducibly would have been chosen and the third followed as a nontarget lesion. Recording that no choice was needed here prevents a reader from wondering whether a lesion was left out to make the response look better.
Timing of the Assessment
The CT was done two weeks after the end of the third cycle, when the immediate swelling and inflammation of treatment had settled. A scan taken too soon after the last dose can overstate the size of a node that is still shrinking, and one taken much later mixes response with what happens after treatment. The timing is stated so the measurement can be placed correctly against the treatment calendar.
What the Patient Was Told
J.L. was told the result in plain terms at the clinic visit on May 20: the lymph nodes have shrunk by about half, the blood markers are back to normal, and one node is still larger than normal. J.L. asked whether that meant the cancer was gone. The answer given was that the treatment has worked well, that the remaining node may be scar or may contain tissue that chemotherapy does not affect, and that the team would discuss the next step and meet again within two weeks. That conversation is recorded because it sets out what the patient has been told the category means.
Summary Line
After three cycles of chemotherapy, J.L. has a RECIST 1.1 partial response, with a 53% decrease in the sum of target node short axes, and complete normalization of serum markers. A 14-millimeter residual left para-aortic node remains.
References
Eisenhauer, E. A., Therasse, P., Bogaerts, J., Schwartz, L. H., Sargent, D., Ford, R., Dancey, J., Arbuck, S., Gwyther, S., Mooney, M., Rubinstein, L., Shankar, L., Dodd, L., Kaplan, R., Lacombe, D., & Verweij, J. (2009). New response evaluation criteria in solid tumours: Revised RECIST guideline (version 1.1). European Journal of Cancer, 45(2), 228-247. https://doi.org/10.1016/j.ejca.2008.10.026
Gilligan, T. D., Seidenfeld, J., Basch, E. M., Einhorn, L. H., Fancher, T., Smith, D. C., Stephenson, A. J., Vaughn, D. J., Cosby, R., & Hayes, D. F. (2010). American Society of Clinical Oncology clinical practice guideline on uses of serum tumor markers in adult males with germ cell tumors. Journal of Clinical Oncology, 28(20), 3388-3404. https://doi.org/10.1200/JCO.2009.26.4481
What the PA 512 Week 8 assignment asks for
The final week asks for a summary of a patient's response to treatment. Reproduce the pretreatment set of findings in full, then the current set in the same layout and order, so the comparison can be checked without returning to the scenario. Choose what to follow using a named response system, such as RECIST 1.1, and apply its rules, including how lymph nodes are measured. Show the arithmetic. Check that the measurements being compared were made by similar methods, and say how any differences were handled. Assign a category using the system's definition, and explain why a neighboring category does not apply. Report tumor markers or other measures separately if the system does not include them. Say what the category does not mean, and leave management decisions out of the summary.
How the PA 512 Week 8 example is put together
The pretreatment block gives February CT details and two nodes, left para-aortic 31 mm and interaortocaval 16 mm in short axis, with clear lungs and starting markers. The current block repeats that layout for the May CT, with nodes of 14 mm and 8 mm and normal markers. RECIST 1.1 rules are stated: nodes count as targets at 15 mm short axis or more and are measured by short axis. The sum falls from 47 to 22 mm, a 53% decrease. The two scans differ in center and slice thickness, so the baseline was remeasured on the same workstation. Partial response is assigned, and complete response is excluded because one node remains 10 mm or more. Markers are reported in their own section. A section explains why a residual node with normal markers could hold scar or teratoma, and short sections cover target selection, scan timing and the conversation with the patient.
PA 512 Week 8 rubric: what full points look like
The commonest loss is a pretreatment set summarized in a sentence instead of reproduced, which leaves the comparison unverifiable. A category claimed with no measurement behind it comes next, and markers ask which figures produced it. Comparing measurements made by different methods or platforms is expensive and frequent; the summary should say how the studies differ and how that was handled. Further deductions follow for nodes measured on the long axis, for arithmetic not shown, for markers folded into an imaging category that does not include them and for a summary that drifts into deciding treatment. Strong summaries reproduce both sets in matching order, name and apply the response system, show the calculation, check like against like, assign a category with its definition, rule out the neighboring category and report other measures separately.
Common PA 512 Week 8 mistakes, and how to avoid them
Response summaries reward careful matching more than long writing, and most lost marks come from comparisons that cannot be checked. Using the scenario your section provided, we can lay out the pretreatment and current findings in the same order, apply the response system's measurement rules and show the arithmetic plainly. Checking whether the two sets were measured the same way is a step drafts often skip, and saying how differences were handled protects the category. Explaining why a neighboring category does not apply, such as partial rather than complete, is another place where clear wording earns marks. The category you assign is yours. If your scenario gives no pretreatment figures, the custom sample states that the comparison cannot be made and reports only what the current set shows.
Get a PA-512 Week 8 example written to your instructions
Send the scenario with both sets of figures, the headings your section publishes and the definitions it marks response against, and a custom example is written to them and comes back inside 24 to 48 hours, the first one free. If your assignment supplies only the current set, say so, and the example asks for the earlier one rather than inventing it.
More PA 512 papers and MPAS samples
- PA 512 Week 1: One Lab Figure Post
- PA 512 Week 2: CBC Interpretation Write-Up
- PA 512 Week 3: Peripheral Smear Correlation
- PA 512 Week 4: Anemia Indices Worksheet
- PA 512 Week 5: Serial Value Table
- PA 512 Week 6: TNM Staging Worksheet
- PA 512 Week 7: Tumor Marker Monitoring Brief
- PA 510 Week 8: Teledermatology Referral Brief
- PA 505 Week 8: Capacity Determination Note
- PA 504 Week 8: Consultant Letter
- PA 503 Week 8: Diagnostic Error Analysis
PA 512 Week 8 questions, answered
The scenario gives no pretreatment figures. What then?
The summary says so in place of inventing them, and builds the comparison on whatever earlier record exists, naming its date and its source. Sections setting this up deliberately are marking whether the writer noticed. Where your assignment does supply an earlier set, send both, and the example is written across them rather than around the gap.
Does the summary need imaging as well as laboratory values?
Only what the scenario supplies. Where both are given, most rubrics want both handled and want the writer to say which one the category rests on when they disagree. Where only figures are given, the summary stays with them and states the limit that creates. Send the scenario and the example uses exactly what is in it.
Can it end without naming a category?
In some sections, yes, and the honest version is often the stronger paper: the measurements compared, the direction stated, and the category left open because the scenario does not reach one. Where a rubric row requires a category, it has to be claimed and supported. Send the rubric and the example finishes where yours requires.
Where can I find a free PA 512 Week 8 sample paper?
You can read the complete PA 512 Week 8 treatment response summary, with RECIST 1.1 measurements and markers reported separately, on this page.
Why is the response partial rather than complete in the PA 512 Week 8 sample?
Because one node still measures 14 mm in short axis, and RECIST 1.1 requires every target node to fall below 10 mm for a complete response.