Rad 370 Skin and melanoma Questions and Answers 100% Solved correctly
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Module
Rad 370 Skin and melanoma
Institution
Rad 370 Skin And Melanoma
what are things to consider for Treatment techniques for non-melanoma? - ️️- need
to ask about previous treatments
- where are the lesions on the body
- is there a high risk of reoccurrence or metastasize
- how deep is it, what's involved in it
Characteristics of Merkel cell tumors? - ️�...
Rad 370 Skin and melanoma
what are things to consider for Treatment techniques for non-melanoma? - ✔️✔️- need
to ask about previous treatments
- where are the lesions on the body
- is there a high risk of reoccurrence or metastasize
- how deep is it, what's involved in it
Characteristics of Merkel cell tumors? - ✔️✔️- rare tumor, high rate of reoccurrence
- more lethal than melanoma
- shows up in sun exposed areas
- firm non-tender pink or red nodular lesions
- most lethal form of skin cancer
- treated w/combo chemo and RT or surgery
characteristics of Basal cell skin cancer? - ✔️✔️- slower growing non-aggressive
-no mets , most prevalent cancer in humans
characteristics of squamous cell skin cancer? - ✔️✔️- higher propensity to metastasize
can arise anywhere but especially in sun exposed areas
How many people have been diagnosed with skin cancer in the US? - ✔️✔️- 3.3 million
people have been treated
- more common in whites
What are the three main types of skin cancer? - ✔️✔️- basal cell
- squamous cell or cutaneous squamous cell
- malignant melanoma
Treatment techniques for melanoma? - ✔️✔️- treatment limited to surgical resection.
- chemo and immunotherapy to prevent mets and reoccurrence and for diseases that do
have mets
What is radiation therapy used for in melanoma treatments? - ✔️✔️- RT is limited to
palliative treatment for metastatic disease
- melanoma has a rep for being radio resistive some success though when used as an
adjuvant for surgery
What is the Stanford technique? - ✔️✔️- used to treat mycosis fungoides
- uses 6 dual treatment fields
- can either stand on a rotating platform or change position
, - long distance 300-400 cm
- 36 Gy in 9 weeks, 4 days a week, 1 Gy per fraction, 1 fraction a day
What are the three main treatment techniques? - ✔️✔️- surgery
- radiation
- chemotherapy
What it surgery used for, for Melanoma treatment? - ✔️✔️- surgery is acceptable if
scaring is allowed
- used to biopsy to remove whole tumor w/margin
How is radiation therapy used for melanoma treatment? - ✔️✔️- RT is used if places of
cosmetic significance. ex. lip, ears, eyelids
- used when surgery is difficult to get to, the tumor and if there is reoccurrence
- normal tissue sparring is an advantage for RT by using electrons
- expense is a downside to RT, so is skin changes
What chemo drugs are used? - ✔️✔️- 5FU in a solution or cream and used topically
What other treatments can be used? - ✔️✔️- Mos procedure
- electrodisection
- cryosurgery
- Immunotherapy
- photosensitizers
- laser surgery
How is Radiation Therapy treatment used for non-melanomas? - ✔️✔️- For non-
melanomas it is very effective especially for small tumors, works well on extensive
disease, where disease is deeper and lymph nodes are involved
- most non-melanomas are superficial in treatment
- can use kV photons, MV used for deeper tumors
What are things to consider when deciding between electrons and KV x-rays - ✔️✔️-
size of treatment volume
- depth of lesion
- underlying anatomic structures
- physician preference
- availability of equipment
What to consider for Field size? - ✔️✔️- with kv the size doesn't matter however, w/a
small field size with electrons we will lose energy since the field is small
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