Remission of longstanding metastatic paraganglioma in a patient after use of zoledronic acid.

A patient with a long history of bone predominant, metastatic paraganglioma who had multiple episodes of progressive disease despite prior treatments demonstrated a remarkable disease response to zoledronic acid. After 1 year of treatment, there was a complete resolution of lymphadenopathy and disappearance of all somatostatin receptor avid lesions by positron emission tomography-CT and radiopharmaceutical Gallium Ga 68 Dotatate. Stability of disease was further demonstrated by CT over several years. The patient continues on surveillance.