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Published on: May 4, 2022
[Intrathorakal nonchromaffin paragangliomas (chemodectomas) (author's transl)]
Summary
This study reports three benign nonchromaffin paragangliomas (chemodectomas) found in the mediastinum and lung. These rare tumors, arising from parasympathetic paraganglia, are typically benign but can rarely be malignant.
Area of Science:
- Thoracic Oncology
- Surgical Pathology
- Neoplasm Biology
Background:
- Nonchromaffin paragangliomas, also known as chemodectomas, are rare neuroendocrine tumors originating from paraganglia.
- Intrathoracic paragangliomas specifically arise from parasympathetic paraganglia within the chest cavity.
- While typically benign, a subset of these tumors exhibit malignant potential.
Observation:
- The study details three cases of benign nonchromaffin paragangliomas.
- Tumor locations included the anterior mediastinum (25-year-old female), posterior mediastinum (55-year-old female), and right upper lung lobe (40-year-old male).
- These findings represent sporadic occurrences of intrathoracic chemodectomas.
Findings:
- The reported cases confirm the occurrence of benign chemodectomas in diverse intrathoracic locations.
- Histological and morphological characteristics are consistent with paraganglioma of neural crest origin.
- The overall incidence of malignancy for these tumors is estimated between 5-10%.
Implications:
- This case series contributes to the understanding of the distribution and presentation of intrathoracic chemodectomas.
- Awareness of these rare tumors is crucial for accurate diagnosis and appropriate management.
- Further research into the factors influencing malignant transformation is warranted.

