Omission of axillary lymph node dissection in patients with clinically negative but pathologically positive sentinel-node macro-metastasis who undergo partial mastectomy.

Omission of axillary lymph node dissection in patients with clinically negative but pathologically positive sentinel-node macro-metastasis who undergo partial mastectomy. - Omission of axillary lymph node dissection in patients with clinically negative but pathologically positive sentinel-node macro-metastasis who undergo partial mastectomy.

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000036899

Enrollment

Registered

2019-07-01

Start date

2019-06-27

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

breast cancer, partial mastectomy, 1 or 2 sentinel lymph nodes containing macro-metastases

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) primary breast cancer 2) Tis,T1,T2,N0M0 3) partial mastectomy 4) 20 year old or older 5) Performance status(ECOCG) 0 or 1 6) preserved the function of main organs 7) obtained consent of the patient to participate in the study

Exclusion criteria

Exclusion criteria: 1) ipsilateral breast tumor recurrence 2) primary systemic therapy 3) extracapsular invasion of lymph node 4) pregnancy or lactation stage 5) no systemic therapy after surgery 6) inappropriate to participate

Design outcomes

Primary

Measure	Time frame
Distant disease-free survival	—

Countries

Japan

Contacts

Public ContactUta Nakadaira

Cancer Institute Hospital of Japanese Foundation for Cancer Research Department of Breast Surgical Oncology, Breast Oncology Center

uta.nakadaira@jfcr.or.jp0335200111

Outcome results