1) Thoracic biopsies and ablations often have complications that can be avoided by following lessons learned from past errors and cases. 2) Three case examples are described where complications such as pneumothorax, hemorrhage, and nerve damage occurred but were managed by applying techniques like choosing shorter needle paths, coagulating bleeding with ablation, and preventing direct contact with nearby structures. 3) Overall the document emphasizes knowing anatomy, being cautious with new devices or patients with other health factors, and applying preventative measures to avoid life-threatening complications during thoracic procedures.