Evidence map›Paper›PMID 41313567›Full record

SynthesisBreast cancer (Tokyo, Japan)2026

Postmastectomy radiation therapy for autologous breast reconstruction: a systematic review and meta-analysis for the 2022 Japanese Breast Cancer Society Clinical Practice Guideline.

Mami Ogita, Subaru Sawayanagi, Haruka Jinnouchi, Michio Yoshimura, Chikako Yamauchi, Naoko Sanuki, Yasushi Hamamoto, Kimiko Hirata, Mariko Kawamura, Yutaka Yamamoto and 2 more

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Breast cancer (Tokyo, Japan), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Mami OgitaDepartment of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo- ku, Tokyo, 113-8655, Japan. ogitam-rad@h.u-tokyo.ac.jp.ORCID http://orcid.org/0000-0002-1539-4298
Subaru SawayanagiDepartment of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo- ku, Tokyo, 113-8655, Japan.
Haruka JinnouchiDepartment of Radiology, Tokyo Teishin Hospital, 2-14-23 Fujimi, Chiyoda-ku, Tokyo, 102-8798, Japan.
Michio YoshimuraDepartment of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, 54 Shogoin-kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Kyoto, Japan.
Chikako YamauchiDepartment of Radiation Oncology, Shiga General Hospital, 5-4-30 Moriyama, Moriyama, 524-8524, Shiga, Japan.
Naoko SanukiDepartment of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku‑Ku, Tokyo, 160-8582, Japan.
Yasushi HamamotoDepartment of Radiation Oncology, National Hospital Organization Shikoku Cancer Center, Ko-160, Minamiumemoto-machi, Matsuyama, Ehime, 791-0280, Japan.
Kimiko HirataDepartment of Radiation Therapy, Osaka Red Cross Hospital, 5-30 Fudegasakicho, Tennouji-ku, Osaka, 543-8555, Osaka, Japan.
Mariko KawamuraDepartment of Radiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Aichi, Japan.
Yutaka YamamotoDepartment of Breast and Endocrine Surgery, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Kumamoto, 860- 8556, Japan.
Shigehira SajiDepartment of Medical Oncology, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Fukushima, Japan.
Tatsuya ToyamaDepartment of Breast Surgery, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Aichi, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe safety of postmastectomy radiation therapy (PMRT) after autologous breast reconstruction remains unclear. Therefore, we conducted a systematic review and meta-analysis to investigate the effects of PMRT on patients with breast cancer who underwent autologous breast reconstruction.

methodsA comprehensive literature search of English and Japanese articles until March 2021 was performed using PubMed/MEDLINE, the Cochrane Library, and Ichushi-Web. We included studies that compared the outcomes of patients with breast cancer who underwent immediate autologous breast reconstruction with and without PMRT. Outcomes including major complications, fat necrosis, and cosmetic results were assessed. Pooled odds ratios (OR) with 95% confidence intervals (CI) were calculated using a random effects model.

resultsTen studies (two retrospective case-controlled and eight retrospective cohort studies) comprising 3,123 cases were included. The rate of major complications was slightly higher in the PMRT group compared to the no PMRT group, but the difference was not statistically significant (13.2% vs. 12.2%, OR 1.58, 95% CI 0.93-2.68, P = 0.09). In contrast, the rate of fat necrosis was significantly increased in the PMRT group (17.2% vs. 8.1%, OR 2.71, 95% CI 1.58-4.65, P = 0.0003). Data on cosmetic outcomes were limited and not pooled for the meta-analysis.

conclusionsPMRT following autologous breast reconstruction was associated with a higher risk of fat necrosis, but not with a significantly increased rate of major complications. With careful patient selection and monitoring, PMRT after autologous breast reconstruction can be considered a safe and acceptable treatment option.

Indexed as

Breast NeoplasmsMammaplastyMastectomyPostoperative ComplicationsFat NecrosisFemaleHumansJapanPractice Guidelines as TopicRadiotherapy, AdjuvantAutologousBreast cancerMammaplastyRadiotherapyReconstruction

Identifiers

PMID41313567
PMCPMC12789149

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.