Question

which of the following sites would be the most likely to contain a metastatic lesion? a) tibial diaphysis b) lumbar vertebra c) talus d) distal phalange

Explanation:

Metastatic lesions tend to localize in areas with high blood flow and red bone marrow (active hematopoietic tissue) in adults. The lumbar vertebrae are part of the axial skeleton, which retains red marrow into adulthood, making them a common site for metastatic spread. The other options (tibial diaphysis, talus, distal phalange) consist mainly of yellow (fatty) marrow in adults and have lower blood flow, so they are far less likely to develop metastatic lesions.

Answer:

B) lumbar vertebra