Study Objective To demonstrate technique for liver mobilization as required for full exposure of the right diaphragm in severe right diaphragm endometriosis cases with associated diaphragm resection. Design N/A Setting Northwest Endometriosis and Pelvic Surgery, a subspecialty practice focused on endometriosis care in Portland, OR. Patients or Participants N/A Interventions This video demonstrates techniques for mobilization of the right side of the liver to achieve full exposure of the diaphragm in diaphragmatic endometriosis surgery Measurements and Main Results N/A Conclusion Diaphragmatic endometriosis is a relatively rare presentation of endometriosis, but will be frequently present in practices where high grade endometriosis patients are cared for. One of the largest challenges in performing diaphragm surgery is the obstruction of visualization and access to the diaphragm by the liver. Techniques for liver mobilization are well documented in hepatobiliary surgery, and when employed in endometriosis surgery can reveal all areas of the right diaphragm. Full mobilization of the right liver involves section of the falciform ligament (liver to anterior abdominal wall and central diaphragm), triangular ligament (liver to right chest wall and lateral diaphragm), and coronary ligament (liver to posterior upper abdominal wall and posterior diaphragm). Section of each of these ligaments (when required) allows full access to anterior, lateral, and posterior aspects of the right diaphragm. To demonstrate technique for liver mobilization as required for full exposure of the right diaphragm in severe right diaphragm endometriosis cases with associated diaphragm resection. N/A Northwest Endometriosis and Pelvic Surgery, a subspecialty practice focused on endometriosis care in Portland, OR. N/A This video demonstrates techniques for mobilization of the right side of the liver to achieve full exposure of the diaphragm in diaphragmatic endometriosis surgery N/A Diaphragmatic endometriosis is a relatively rare presentation of endometriosis, but will be frequently present in practices where high grade endometriosis patients are cared for. One of the largest challenges in performing diaphragm surgery is the obstruction of visualization and access to the diaphragm by the liver. Techniques for liver mobilization are well documented in hepatobiliary surgery, and when employed in endometriosis surgery can reveal all areas of the right diaphragm. Full mobilization of the right liver involves section of the falciform ligament (liver to anterior abdominal wall and central diaphragm), triangular ligament (liver to right chest wall and lateral diaphragm), and coronary ligament (liver to posterior upper abdominal wall and posterior diaphragm). Section of each of these ligaments (when required) allows full access to anterior, lateral, and posterior aspects of the right diaphragm.