Chapter 38 Quiz Flashcards
the disease that is occasionally treated with total skin irradiation with electrons
mycosis fungoides
the layer of the epidermis that contains cells that are most sensitive to radiation is the
stratum basale
the layers of the skin starting with the most superficial to the deepest are:
epidermis
basement membrane
dermis
subcutaneous layer
melanocytes and merkel cells are found in the _____ layer of the skin stratum
basal
treatment of choice for most melanoma skin cancers
surgery
the technique in whihc the tumor is removed and examined one layer at a time
mohs surgery
tanning of the skin in the treated area after a course of radation therapy is caused by
stimulation of the melanocytes
when shielding the eye during radiation, what can be used to minimized backscatter
a coating of wax to cover the outer surface of the shield
wax has s low atomic number
two skin cancers with the best prognosis
basal cell carcinoma
squamous cell carcinoma
what is true regarding melanomas
tend to be asymmetric in shape
tending to have notched, uneven borders
tend to contain different shades of black, brown, and tan
most have a diamer > 6 mm
which type of rays is thought ot penetrate deeper into the layers of the skin
UVA
what is true regarding melanomas
- tend to develop in the basal layer
- tumors located on the extremeities have a better prognosis than tumors on the head/neck
- prognosis worse for older patients
- thicker tumors yeild a porrer prognosis
which skin cancer is the most radioresistent
melanoma
which type of skin cancer has the highest mortality rate
merkell cell carcinoma
which two skin cancers are most common
squamous cell carcinoma
basal cell carcinoma
