Which site is the preferred site for metastasis of sarcomas?

Which site is the preferred site for metastasis of sarcomas?

• A. Lungs
• B. Liver
• C. Brain
• D. Bone

Answer: (A)

Hematogenous spread of sarcomas preferentially seeds the lungs because the venous drainage from most primary sites carries tumor cells to the right heart and then directly into the pulmonary capillary bed. The lungs are the first major filter that circulating sarcoma cells encounter, so they become the most common site for initial metastatic deposits. Osteosarcoma, soft-tissue sarcomas, and many other sarcomas frequently show pulmonary metastases as their dominant or earliest metastatic pattern. Other sites like the liver, brain, or bone can be involved later, but they are less commonly the first or most frequent target compared with the lungs.

Hematogenous spread of sarcomas preferentially seeds the lungs because the venous drainage from most primary sites carries tumor cells to the right heart and then directly into the pulmonary capillary bed. The lungs are the first major filter that circulating sarcoma cells encounter, so they become the most common site for initial metastatic deposits.

Osteosarcoma, soft-tissue sarcomas, and many other sarcomas frequently show pulmonary metastases as their dominant or earliest metastatic pattern. Other sites like the liver, brain, or bone can be involved later, but they are less commonly the first or most frequent target compared with the lungs.