A surgical assistance system for use in a surgical intervention on a patient, comprising: a display device, in particular an OR monitor, for displaying a visual content, in particular a picture, an endoscope, in particular a video endoscope, with a, preferably distal, imaging recording head, which is provided and adapted to create an intracorporeal image of the patient, a data-providing unit, in particular a storage unit, which is adapted to provide, in particular to prepare and provide, digital 3D image data, in particular preoperative 3D image data, of the patient, a control unit adapted to process the intracorporeal image of the endoscope and the 3D image data, characterized by a registration unit which is adapted to detect, in the intracorporeal image, at least one, in particular predetermined, anatomical landmark and/or anatomical orientation and to determine a corresponding anatomical landmark and/or orientation in the provided 3D image data, and to register the intracorporeal image with the 3D image data, at least initially, and to register the endoscope, in particular the recording head, relative to the patient, a tracking system which is adapted to continuously detect a pose and/or an orientation and/or a movement of the endoscope, in particular of the recording head, and to provide the control unit with endoscope movement data, wherein the control unit is further adapted to generate a correlation display with both at least a display of the intracorporeal image and at least a display of a view of the 3D image data, in which the intracorporeal image and the view of the 3D image data are correlated with respect to the endoscope, in particular to the recording head, by transferring the detected endoscope movement data to at least one virtual position and/or orientation of a virtual recording head, in particular a virtual endoscope, in the view of the 3D image data for a correlated movement, and the control unit is adapted to visually output the correlation display thus generated via the display device, wherein the tracking system is configured as an endoscope-internal tracking system and the endoscope, in particular a handling portion and/or the recording head, has an endoscope-internal movement sensor, in particular an acceleration sensor and/or a rotation rate sensor, particularly preferably an inertial measurement unit, for detecting the endoscope movement data, and/or for the tracking system, the control unit is adapted to determine the movement of the endoscope, in particular of the recording head, via an image analysis of moving anatomical structures in the intracorporeal image. a display device, in particular an OR monitor, for displaying a visual content, in particular a picture, an endoscope, in particular a video endoscope, with a, preferably distal, imaging recording head, which is provided and adapted to create an intracorporeal image of the patient, a data-providing unit, in particular a storage unit, which is adapted to provide, in particular to prepare and provide, digital 3D image data, in particular preoperative 3D image data, of the patient, a control unit adapted to process the intracorporeal image of the endoscope and the 3D image data, characterized by a registration unit which is adapted to detect, in the intracorporeal image, at least one, in particular predetermined, anatomical landmark and/or anatomical orientation and to determine a corresponding anatomical landmark and/or orientation in the provided 3D image data, and to register the intracorporeal image with the 3D image data, at least initially, and to register the endoscope, in particular the recording head, relative to the patient, a tracking system which is adapted to continuously detect a pose and/or an orientation and/or a movement of the endoscope, in particular of the recording head, and to provide the control unit with endoscope movement data,