ArticleSurgery today2026
Secondary breast surgery after initial partial mastectomy for breast cancer in Japan.
Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPartial mastectomy for breast cancer may be followed by unplanned secondary surgery due to adverse outcomes, such as the detection of positive margins or cancer recurrence, thus adding burden to patients, providers, and payers. We analyzed the prevalence of this outcome and its economic impact in Japan.
methodsWe utilized the Medical Data Vision (MDV) Research Database to identify a cohort of women in Japan who underwent an index partial mastectomy between 2008 and 2023, following their healthcare encounters up to 5 years postoperatively, including any secondary partial or total mastectomies.
resultsOverall, 49,659 patients with breast cancer underwent primary partial mastectomy, and 2,203 (4.4%) underwent a second surgery. Among these secondary procedures, approximately two-thirds were total mastectomies. The median five-year postoperative healthcare expenditure among patients with one primary partial mastectomy was ¥1.8 million, and ¥2.5 million among patients requiring more than one procedure. Secondary procedures were more common among younger patients, those with larger tumors, and those who did not receive neoadjuvant therapy.
conclusionPartial mastectomy is an essential surgical treatment for early stage breast cancer in Japan. While secondary surgery rates are low compared with other countries, these procedures still have negative financial consequences and extend patients' journeys to remission.
Indexed as
Identifiers
42474775What OpenQuestion holds
Registered trials
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.