T o conclude, TESPB provided excellent pain relief during and after pigtail catheter placement for palliative thoracocentesis of MPE in our patient, which helped to improve patient satisfaction and early ambulation. Letters to Editor 234 Saudi Journal of Anesthesia / V olume 15 / Issue 2 / April-June 2021 Moreover, the IMA lies in a deeper fascial plane compared to the one in which they correctly performed US-PSB. TESPB provides analgesia for incision, cannula and catheter insertion, suture fixation, and post-procedural analgesia. Ultrasound-guided thoracic erector spinae plane block for periprocedural analgesia in pigtail catheter insertion for palliative thoracocentesis. [Extracted from the article]