---
title: "Why do tumors need angiogenesis?"
url: "https://worldwiki.io/q/why-do-tumors-need-angiogenesis"
type: "question"
language: "en"
intent: "informational"
entity: "Angiogenesis"
topic: "SVF & Adipose-derived Cells"
published: "2026-09-18 07:10:23"
updated: "2026-10-08 09:18:06"
---

# Why do tumors need angiogenesis?

## Short answer

Solid tumors need their own blood supply to grow larger than a few millimeters. They release chemical signals, or prompt nearby cells to release them, which cause new vessels to grow toward the tumor. These vessels bring oxygen and nutrients, letting the tumor grow, invade nearby tissue and spread to other organs. Judah Folkman proposed in 1971 that blocking this process could be a cancer treatment.

## Answer

NCI explains the role of angiogenesis in tumor growth [1]. Folkman's postulates, including the limit of about 2–3 mm³ without new vessels, are summarized in a 2010 editorial [4].

### Stem cells in cosmetic surgery

In cosmetic surgery, "stem cell" procedures almost always use [adipose-derived stem cells](/entity/adipose-derived-stem-cell). The stromal vascular fraction (SVF), which contains them, is separated from liposuctioned fat and mixed into the fat being grafted, as in [stem cell breast augmentation](/entity/stem-cell-breast-augmentation) and [stem cell fat grafting](/entity/stem-cell-fat-grafting).

## Related questions

- [What are the side effects of angiogenesis inhibitors?](https://worldwiki.io/q/what-are-the-side-effects-of-angiogenesis-inhibitors)
- [What is the difference between angiogenesis and vasculogenesis?](https://worldwiki.io/q/what-is-the-difference-between-angiogenesis-and-vasculogenesis)
- [What is VEGF and what does it do in angiogenesis?](https://worldwiki.io/q/what-is-vegf-and-what-does-it-do-in-angiogenesis)
- [Do stem cells improve fat graft survival through angiogenesis?](https://worldwiki.io/q/do-stem-cells-improve-fat-graft-survival-through-angiogenesis)

## Sources

1. [Angiogenesis Inhibitors (fact sheet)](https://www.cancer.gov/about-cancer/treatment/types/immunotherapy/angiogenesis-inhibitors-fact-sheet) — National Cancer Institute · evidence page: https://worldwiki.io/source/146
2. [Overview of Angiogenesis (in: Adair TH, Montani JP. Angiogenesis)](https://www.ncbi.nlm.nih.gov/books/NBK53238/) — Morgan & Claypool Life Sciences / NCBI Bookshelf · evidence page: https://worldwiki.io/source/147
3. [Bevacizumab (StatPearls)](https://www.ncbi.nlm.nih.gov/books/NBK482126/) — StatPearls Publishing / NCBI Bookshelf · evidence page: https://worldwiki.io/source/148
4. [Tumor Angiogenesis (editorial), Dudek AZ, Gupta K, Ramakrishnan S, Mukhopadhyay D. Journal of Oncology](https://pmc.ncbi.nlm.nih.gov/articles/PMC2945670/) — Journal of Oncology (Hindawi) · evidence page: https://worldwiki.io/source/149
5. [Treatments for Wet AMD (Advanced Neovascular AMD)](https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/age-related-macular-degeneration/treatments-wet-amd-advanced-neovascular-amd) — National Eye Institute (NIH) · evidence page: https://worldwiki.io/source/150
6. [Therapeutic Angiogenesis for Peripheral Artery Disease: Lessons Learned in Translational Science, Iyer SR, Annex BH](https://pmc.ncbi.nlm.nih.gov/articles/PMC5802410/) — JACC: Basic to Translational Science · evidence page: https://worldwiki.io/source/151
7. [Cell-Assisted Lipotransfer for Cosmetic Breast Augmentation: Supportive Use of Adipose-Derived Stem/Stromal Cells, Yoshimura K et al.](https://pmc.ncbi.nlm.nih.gov/articles/PMC2175019/) — Aesthetic Plastic Surgery · evidence page: https://worldwiki.io/source/152
8. [Adipose-Derived Stem Cell, Stromal Vascular Fraction, and Regenerative Cell Enrichment in Fat Grafting: A Systematic Review of Safety and Functional Outcomes](https://pmc.ncbi.nlm.nih.gov/articles/PMC12812246/) — Cureus (PubMed Central) · evidence page: https://worldwiki.io/source/145