LAnreotide in Metastatic Pheochromocytoma / PARAganglioma (LAMPARA)

Participants will receive lanreotide 120 mg deep subcutaneous injection every 4 weeks (±7 days) for 52 weeks, followed by an extension phase in which all patients will continue to receive lanreotide 120 mg injection every 4 weeks (±7 days) if there is no evidence of disease progression.