Fig. 1From: Efficacy of bi-level erector spinae plane block versus bi-level thoracic paravertebral block for postoperative analgesia in modified radical mastectomy: a prospective randomized comparative studyThoracic paravertebral space, before (A) and after (B) execution of thoracic paravertebral block. TP: Transverse Process; PP: Parietal Pleura; CTL: Superior Costo-transverse ligamentBack to article page