Types of STS
Treatment
Behavior
RT Facts
Case-Based ?s
100
The most common type of Soft Tissue Sarcoma.
What is a Fibrosarcoma?
100
Primary mode of treatment
Depends on size
100
STS usually do not recur locally (T or F)
False; STS have a high incidence of local recurrence
100
2 modes of RT other than external beam used in treating STS
Brachytherapy Intra-operative
100
Our patient had MIFS. What is this?
Myxoinflammatory fibroblastic sarcoma
200
STS that arises in smooth muscle tissue
What is a leiomyosarcoma?
200
In which ways are small-moderate STS treated
surgery, RT, and chemo
200
Most STS have no age or gender distinction (T or F)
True
200
Appx how many weeks after surgery would post-op RT be administered
approximately 3 weeks to allow for proper healing
200
What staging system is used for STS?
MSTS (Musculoskeletal Tumor Society)
300
Type of STS that is more common in older people and is very radiosensitive
What is a liposarcoma?
300
How to treat a large STS
RT and chemo (surgery not an option bc of size and especially not if in a dangerous location)
300
2 reasons why STS usually recur
Non-encapsulated Usually not detected until disease is advanced
300
Is RT done pre or post op when doing a radical surgical procedure
Either (doctors preference)
300
Our patient was staged T1bN0M0.. explain this staging.
The tumor is deep in the limb or the abdomen. No nodal involvement. No metastasis.
400
2 common places where synovial sarcomas are found
What are the knees and ankles?
400
What defines a large STS
lesion is non-encapsulated and has metastasized
400
We still amputate as treatment for STS (T or F)
True; in certain cases amputation is still considered
400
Name 2 chronic side effects specific to STS treatment with RT
lymphedema thickening/scarring of skin and muscles
400
What Stage is this?
Stage 1A: G1, T1, M0
500
Medical name for an undifferentiated soft tissue sarcoma and place it is most commonly found
What is a myxosarcoma? What is the buttocks?
500
Describe a radical surgical procedure and what are the margins
surgical removal of the entire mass, 3 cm margins all around, and the overlying skin
500
3 reasons why we would amputate with STS
-compromised blood supply -if surgically removing mass would be debilitating -for palliation
500
List the 3 rules of thumb
-include entire muscle (origin to insertion) -include entire scar -spare a strip for lymphatic drainage
500
Explain what the G1 and T1 in the staging mean
G1- low grade T1-compartmentalized
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