{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"medRxiv"}],"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T21:58:47Z","timestamp":1785189527460,"version":"3.55.0"},"posted":{"date-parts":[[2026,7,1]]},"group-title":"Oncology","reference-count":17,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.medrxiv.org\/about\/FAQ#license"}],"funder":[{"name":"Achar Meyohas Family"},{"name":"The Lois Green Fund"},{"name":"The Rose-Margulies Family Research Fund"},{"name":"NIH\/NCI Cancer Center Support","award":["P30CA008748"],"award-info":[{"award-number":["P30CA008748"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2026,7,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:p>Sentinel lymph node biopsy (SLNB) is increasingly omitted in early-stage breast cancer, often prompting whole-breast irradiation (WBI). We evaluated partial-breast irradiation (PBI) without axillary surgery among 78 clinically node-negative patients (median age 75) treated from 2014\u20132022. After 53-month median follow-up, no ipsilateral, regional, or distant recurrences occurred. These results demonstrate excellent outcomes and suggest PBI is a feasible, safe alternative to WBI when SLNB is omitted.<\/jats:p>","DOI":"10.64898\/2026.06.29.26356836","type":"posted-content","created":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T15:25:18Z","timestamp":1783178718000},"source":"Crossref","is-referenced-by-count":0,"title":["Partial breast irradiation after lumpectomy with omission of surgical axillary evaluation"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9844-8254","authenticated-orcid":false,"given":"Diana A.","family":"Roth O\u2019Brien","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lillian A.","family":"Boe","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2963-6902","authenticated-orcid":false,"given":"Boris A.","family":"Mueller","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3511-369X","authenticated-orcid":false,"given":"Giacomo","family":"Montagna","sequence":"additional","affiliation":[{"name":"Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2183-0949","authenticated-orcid":false,"given":"Emma N.","family":"Hahesy","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0234-5451","authenticated-orcid":false,"given":"John J.","family":"Cuaron","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0897-6668","authenticated-orcid":false,"given":"J. Isabelle","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael B.","family":"Bernstein","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beryl","family":"McCormick","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8183-4765","authenticated-orcid":false,"given":"Simon N.","family":"Powell","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Atif J.","family":"Khan","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5127-0217","authenticated-orcid":false,"given":"Lior Z.","family":"Braunstein","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"54368","reference":[{"key":"2026072714002480000_2026.06.29.26356836v1.1","doi-asserted-by":"publisher","DOI":"10.1097\/00000658-199409000-00015"},{"key":"2026072714002480000_2026.06.29.26356836v1.2","unstructured":"Network NCC. NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines\u00ae): Breast Cancer [v.3.2025]. Accessed 04\/10\/2025, https:\/\/www.nccn.org\/professionals\/physician_gls\/pdf\/breast.pdf"},{"key":"2026072714002480000_2026.06.29.26356836v1.3","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.21.00934"},{"key":"2026072714002480000_2026.06.29.26356836v1.4","unstructured":"Wisely C. Sentinel Lymph Node Biopsy. 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