Safety and efficacy evaluation of postoperative whole breast radiotherapy in prone position for Japanese Women

Safety and efficacy evaluation of postoperative whole breast radiotherapy in prone position for Japanese Women - Safety and efficacy evaluation of postoperative whole breast radiotherapy in prone position for Japanese Women

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000020705

Enrollment

Registered

2016-01-23

Start date

2009-08-12

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

Interventions

Postoperative whole breast radiotherapy was delivered in the prone position. Postoperative whole breast radiotherapy was delivered in the supine position.

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: Patients with stage 0-II breast cancer(invasive or non-invasive). Large or pendulous breasts (Japanese bra size C or larger, or the widest measurements of the bust equal to or over 95 cm). Undergoing partial mastectomy in National Cancer Center Hospital. Three or less axillary lymph node metastasis. Written informed consents were obtainted.

Exclusion criteria

Exclusion criteria: History of irradiation to the ipsilateral breast. Concurrent malignancy. Bilateral breast cancer. Active connective tissue disorders. In pregnancy. Severe infection.

Design outcomes

Primary

Measure	Time frame
the frequency and severity of acute radiation toxicities	—

Countries

Japan

Contacts

Public ContactKana Takahashi

National Cancer Center Hospital Department of Radiation Oncology

kantakah@ncc.go.jp03-3542-2511

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026