{
  "abstract": "Introduction\n\nThere is no consensus on the significance of repeat sentinel lymph node (SLN) biopsy in a patient with ipsilateral breast tumor recurrence (IBTR).Case presentation\n\nA 49-year-old premenopausal woman developed an ipsilateral breast cancer (BC) lesion after previously undergoing lumpectomy, SLN biopsy, and adjuvant radiation therapy for left-sided lobular carcinoma in situ at the age of 35. Because of the contralateral SLNs identified on radioisotope lymphoscintigraphy, we decided to perform a left mastectomy with contralateral axillary lymph node dissection. Intraoperative SLN mapping using indigo carmine was negative. A total of 3 contralateral axillary lymph node metastases, all sentinel nodes, were identified among 18 resected nodes. Because this patient's second BC was an invasive ductal carcinoma, a different histology from her first tumor, we diagnosed a new primary BC along with contralateral axillary lymph node metastases and planned adjuvant therapy accordingly.Conclusions\n\nRepeat SLN biopsy for IBTR plays a key role in determining accurate SLN status and in optimizing adjuvant therapy.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Breast and Endocrine Surgery, Matsue City Hospital, Matsue, Shimane, Japan."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Naotaka Uchida"
    },
    {
      "affs": [
        0
      ],
      "name": "Takako Suda"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/69y8d5wg7y228.bib",
  "cited_by": 0,
  "doi": "10.70352/scrj.cr.26-0507",
  "fulltext_url": "https://europepmc.org/articles/PMC13696105",
  "id": "69y8d5wg7y228",
  "issns": [
    "2198-7793"
  ],
  "landing_url": "https://europepmc.org/article/MED/42928951",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1306|Breast Cancer Treatment Studies"
    ]
  ],
  "openalex": "W7223101214",
  "pdf_url": "https://europepmc.org/articles/PMC13696105?pdf=render",
  "pmcid": "PMC13696105",
  "pmid": "42928951",
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/69y8d5wg7y228.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:18Z",
      "native_id": "MED:42928951",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42928951"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:1306|Breast Cancer Treatment Studies",
      "subfield": "oncology"
    }
  ],
  "title": "Contralateral Axillary Lymph Node Metastases Detected by Repeat Sentinel Lymph Node Biopsy in a Patient with Ipsilateral Breast Tumor Recurrence: A Case Report.",
  "title_text": "Contralateral Axillary Lymph Node Metastases Detected by Repeat Sentinel Lymph Node Biopsy in a Patient with Ipsilateral Breast Tumor Recurrence: A Case Report.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:21:18Z",
  "url": "https://research.draconitic.com/paper/69y8d5wg7y228",
  "venue": "Surgical case reports",
  "versions": []
}