Metastatic Cutaneous Paraganglioma: A Case Report and Review of the Literature

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Abstract

Paragangliomas are rare neoplasms that arise from chromaffin cells of the sympathetic and parasympathetic nervous system. These tumors are often cured by surgical resection but the risk for metastatic disease exists, particularly for extra-adrenal paragangliomas. The behavior of these tumors is unpredictable, and clinical and histopathological features associated with malignancy have not been determined. The most common sites of metastases include local and distant lymph nodes, bone, liver, and lung. Cutaneous metastases are exceedingly rare with only 2 reported cases, both of which presented on the scalp. Here we describe a 78-year-old woman with cutaneous metastatic paraganglioma presenting as a forehead nodule, which developed 15 years after her initial diagnosis of paraganglioma.

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