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Pigmented vagal paraganglioma.

C Ekambar E Reddy1, Naresh K Panda, Kim Vaiphei

  • 1Department of Otolaryngology, Postgraduate Institute of Medical Education and Research, Chandigarh-160012, India.

The Journal of Laryngology and Otology
|August 7, 2003
PubMed
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This study reports a rare case of pigmented vagal paraganglioma, a tumor arising from the vagus nerve. The tumor presented unusual features including massive necrosis and hypovascularity, complicating diagnosis.

Area of Science:

  • Neuro-oncology
  • Pathology

Background:

  • Paragangliomas are rare neuroendocrine tumors originating from extra-adrenal chromaffin cells.
  • Vagal trunk paragangliomas are exceptionally uncommon, with pigmented variants being even rarer.

Observation:

  • A unique case of pigmented paraganglioma originating from the vagal trunk below the nodose ganglion is presented.
  • The tumor exhibited extensive central necrosis and appeared hypovascular on angiography.
  • Pigmented paragangliomas have been documented in various extra-adrenal sites, but not previously in the cervical vagal paraganglion.

Findings:

  • The presented case highlights the rarity of pigmented vagal paragangliomas.
  • Massive central necrosis and hypovascularity were key diagnostic challenges.
  • This report expands the known sites of occurrence for pigmented paragangliomas.

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Implications:

  • Increased awareness of pigmented vagal paragangliomas is crucial for accurate diagnosis.
  • The unusual presentation necessitates a high index of suspicion in cases of cervical masses.
  • Further research may elucidate the pathogenesis and optimal management of these rare tumors.