Overview Ultrasound Guided Pectoral Nerves Blockade for Persistent Pain After Breast Cancer Surgery Status: Unknown status Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary This is a pilot study of the pectoral nerves block (PECS) in patients with persistent pain after breast cancer surgery. Phase: Phase 2 Details Lead Sponsor: Rigshospitalet, DenmarkCollaborator: Henrik KehletTreatments: Bupivacaine