{
  "abstract": "Cerebellopontine angle (CPA) tumors are predominantly vestibular schwannomas and meningiomas; metastatic lesions in this location are rare, particularly in the absence of multiple brain metastases. We report the case of a 53-year-old woman with a history of invasive ductal carcinoma of the breast in HER2-positive metastatic relapse, in whom brain MRI revealed a single 28 × 24 mm mass in the right cerebellopontine angle. The lesion was isointense on T1- and T2-weighted images, contained fluid components, and showed restricted diffusion (ADC 0.64 × 10⁻³ mm²/s) with intense peripheral enhancement after gadolinium administration. MR spectroscopy demonstrated markedly elevated Cho/NAA (6.73) and Cho/Cr (5.72) ratios within the lesion, with a normal perilesional spectroscopic profile, favoring a secondary lesion and allowing the main differential diagnoses to be excluded without biopsy. The patient underwent stereotactic radiotherapy (30 Gy in 5 fractions), with significant regression of the lesion on follow-up MRI at five months. This case illustrates the role of MR spectroscopy in the non-invasive characterization of atypical cerebellopontine angle lesions.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Radiology, National Institute of Oncology, Faculty of Medicine and Pharmacy of Rabat, Mohamed V University, Rabat, Morocco."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Delors Gray Tsioukaka"
    },
    {
      "affs": [
        0
      ],
      "name": "Herlinda Njocke"
    },
    {
      "affs": [
        0
      ],
      "name": "Jean Vincent Fouda Ekodo"
    },
    {
      "affs": [
        0
      ],
      "name": "Youssef Omor"
    },
    {
      "affs": [
        0
      ],
      "name": "Rachida Latib"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6kawyk4kmwdbb.bib",
  "cited_by": 0,
  "doi": "10.1016/j.radcr.2026.09.078",
  "fulltext_url": "https://europepmc.org/articles/PMC13684993",
  "id": "6kawyk4kmwdbb",
  "issns": [
    "1930-0433"
  ],
  "landing_url": "https://europepmc.org/article/MED/42910083",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2740|Brain Metastases and Treatment"
    ]
  ],
  "openalex": "W7221666272",
  "pdf_url": "https://europepmc.org/articles/PMC13684993?pdf=render",
  "pmcid": "PMC13684993",
  "pmid": "42910083",
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6kawyk4kmwdbb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:10Z",
      "native_id": "MED:42910083",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42910083"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2740|Brain Metastases and Treatment",
      "subfield": "general"
    }
  ],
  "title": "Isolated cerebellopontine angle metastasis from breast cancer: The added value of MR spectroscopy.",
  "title_text": "Isolated cerebellopontine angle metastasis from breast cancer: The added value of MR spectroscopy.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:10Z",
  "url": "https://research.draconitic.com/paper/6kawyk4kmwdbb",
  "venue": "Radiology case reports",
  "versions": []
}