How does cancer spread through the body? - Ivan Seah Yu Jun

TL;DR

Cancer spreads through metastasis using three common routes: transcoelomic, lymphatic, and hematogenous spread.

Transcript

The onset of cancer usually begins as a solitary tumor in a specific area of the body. If the tumor is not removed, cancer has the ability to spread to nearby organs, as well as places far away from the origin, such as the brain. So how does cancer move to new areas, and why are some organs more likely to get infected than others? The process of c... Read More

Key Insights

• 🥳 Metastasis involves cancer cells moving from primary tumors to other parts of the body via transcoelomic, lymphatic, or hematogenous spread.
• 🧑‍🏭 Different cancers have preferred sites of metastasis due to vascular and microenvironmental factors.
• 🌱 The seed and soil theory and vascular/lymphatic channels influence where cancer spreads in the body.
• ♋ Understanding metastasis mechanisms is crucial for developing effective treatments against advanced cancers.

Questions & Answers

Q: What is metastasis in cancer?

Metastasis in cancer refers to the process where cancer cells from a primary tumor spread to other parts of the body, forming secondary tumors. It is a complex process involving invasion, movement, and proliferation of cancerous cells.

Q: How do cancer cells spread through transcoelomic spread?

Transcoelomic spread occurs when cancer cells penetrate the lining of cavities in the body, such as the peritoneum, allowing them to move and grow in nearby tissues like the liver.

Q: Why do certain cancers have specific sites of metastasis?

Different cancers tend to metastasize to specific organs due to factors like blood flow patterns and microenvironments within those organs that are conducive to cancer cell growth.

Q: How do theories like the seed and soil theory explain metastasis?

The seed and soil theory proposes that cancer cells thrive in specific environments, only growing in areas with similar characteristics, while the vascular/lymphatic theory suggests that metastatic sites are determined by blood and lymph flow.

Summary & Key Takeaways

• Cancer metastasis starts with cancer cells invading nearby tissues, spreading through the body via transcoelomic, lymphatic, or blood vessels.

• Specific cancers have preferred sites of metastasis, like prostate cancer to bone or colon cancer to liver.

• Theories like the seed and soil theory and vascular/lymphatic channels influence metastasis locations.