# Monica Morrow

Source: https://onco.cc/people/monica-morrow/  
OnCo record `monica-morrow` (Person). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Breast surgeon whose margin and axillary guidelines cut unnecessary re-excisions and lymph node surgery worldwide.

## Summary

Monica Morrow co-chaired the SSO-ASTRO consensus that defined 'no ink on tumour' as an adequate margin for breast conservation, sharply reducing re-excision rates, and has led the evidence for omitting axillary dissection after positive sentinel nodes. She chairs the breast service at MSKCC and has been president of the Society of Surgical Oncology. Her work continues on tailoring surgery to response after neoadjuvant therapy.

## Fields

- Kind: Person
- Last checked: 2026-09-10
- Tags: breast; surgery; de-escalation
- Role: Chief, Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center
- Specialisms: Breast surgery; Surgical margins; Axillary management; Surgical de-escalation

## Sources

- PubMed: https://pubmed.ncbi.nlm.nih.gov/?term=Morrow%20M%5BAuthor%5D%20breast%20margins

## Connected records

- cancers: [HER2-positive breast cancer](https://onco.cc/cancers/breast-her2-positive/), [HR-positive / HER2-negative breast cancer](https://onco.cc/cancers/breast-hr-positive/), [Triple-negative breast cancer (TNBC)](https://onco.cc/cancers/tnbc/)
- technologies: [Sentinel lymph node biopsy](https://onco.cc/technologies/sentinel-node/)
- institutions: [Memorial Sloan Kettering Cancer Center](https://onco.cc/institutions/mskcc/), [Society of Surgical Oncology](https://onco.cc/institutions/sso/)

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JSON: https://onco.cc/api/v1/entities/monica-morrow.json