Following a biopsy, a 54-year-old man has been diagnosed as having a benign neoplastic tumor. Which of the following characteristics most likely applies to his tumor?
A)
The tumor is poorly approximated and has the potential to break loose.
B)
The tumor may secrete hormones or cytokines.
C)
The well-differentiated, neoplastic cells are clustered together in a single mass.
D)
It has a rapid rate of growth and can induce ischemia.
Ans:
C
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Benign tumors are composed of well-differentiated, neoplastic cells that resemble the cells of the tissues of origin and are characterized by a slow, progressive rate of growth that may come to a standstill or regress. They tend to exist in a single mass. Malignant tumors tend to be poorly differentiated, grow rapidly, secrete hormones or cytokines, and have the potential to break loose.
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