ArticleThe Indian journal of radiology & imaging
Diffusion-weighted imaging in extracranial head and neck schwannomas: A distinctive appearance.
Article in The Indian journal of radiology & imaging. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 23 citations in OpenAlex.
- Parapharyngeal Schwannoma: Limitations Regarding Diagnosis and Surgical Intervention-A Case Report and Focused Literature Review.Diagnostics (Basel, Switzerland) · 2026Article
- Evaluation of multiparametric MRI differentiating pleomorphic adenoma from schwannoma in parapharyngeal space.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024Article
- Extracranial Head and Neck Schwannomas: A Single Centre Retrospective Experience of 97 Cases.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024Article
- A 32-year-old man with plexiform schwannoma of the thyroid gland: a case report.Journal of Yeungnam medical science · 2024Article
- Diagnosis and management of hypoglossal nerve-derived schwannoma in the floor of mouth: a case series.BMC oral health · 2022Article
- Laryngeal schwannoma with extralaryngeal extension mimicking a thyroid tumour.BJR case reports · 2022Article
- Adrenal schwannoma: a case report.BJR case reports · 2020Article
- Differentiation between solitary fibrous tumors and schwannomas of the head and neck: an apparent diffusion coefficient histogram analysis.Dento maxillo facial radiology · 2019Article
- MR imaging features of benign retroperitoneal paragangliomas and schwannomas.BMC neurology · 2018Article
- MR imaging features of benign retroperitoneal extra-adrenal paragangliomas.Scientific reports · 2017Article
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6 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
purposeTo evaluate the diffusion weighted (DW) magnetic resonance imaging (MRI) features of the extracranial schwannomas of head and neck. MATERIALS AND
methodsThe MRI (including DWI) of 12 patients with pathologically proven head and neck schwannomas (4 men, 8 women, with mean age of 32.6 years; age range 16-50 years) were retrospectively evaluated. Images were analyzed for signal intensity and morphology on conventional sequences followed by the qualitative evaluation of DW images (DWI) and measurement of apparent diffusion coefficient (ADC) values.
resultsMajority of the tumors were located in the parapharyngeal space (8/12). All but one showed heterogeneous appearance, with 10 tumors showing scattered areas of hemorrhage. Eight out of 12 tumors showed intensely hyperintense core surrounded by intermediate signal intensity peripheral rim (reverse target sign) on T2-weighted (T2W) images. On DWI, these eight tumors showed a distinctive appearance, resembling target sign on trace DWI and reverse target on ADC map. Out of the remaining four tumors, one showed uniformly restricted diffusion whereas three showed free diffusion. Mean ADC value in the central area of free diffusion was 2.277 × 10(-3) mm(2)/s (range of 1.790 × 10 -(3) to 2.605 × 10(-3) mm(2)/s) whereas in the peripheral area was 1.117 × 10(-3) mm(2)/s (range of 0.656 × 10(-3) to 1.701 × 10(-3) mm(2)/s). Rest of the schwannomas showing free diffusion had a mean ADC value of 1.971 × 10(-3) mm(2)/s.
conclusionMajority of the head and neck schwannomas showed a characteristic appearance of free diffusion in the centre and restricted diffusion in the periphery of the mass.
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