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Review Question - QID 151

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QID 151 (Type "151" in App Search)
All of the following are necessary steps in bony metastasis of a malignant cell EXCEPT?

Intravasation

8%

91/1155

Avoidance of immune surveillance

4%

46/1155

Target tissue localization

7%

76/1155

Induction of angiogenesis

3%

40/1155

Direct stimulation of osteoclasts

77%

891/1155

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Malignant cell metastasis requires at a minimum tumor cell intravasation (entry into blood vessels), avoidance of immune surveillance, target tissue localization, and induction of angiogenesis. While tumor cells may stimulate osteoclasts in the process of tumor cell osteolysis, this is not a necessary step for metastasis. In addition, tumor cells do not directly stimulate osteoclasts, they indirectly stimulate them through osteoblast/stromal cell production of cytokines like RANKL.

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