A surgical retractor includes a first component and a second component. The first component includes a first top structure and a conical outer wall. The first top structure has a first opening. The outer wall extends below the first top structure to form an ellipse-shaped second opening in communication with the first opening. The second component includes a second top structure and conical inner wall. The second top structure has a third. The inner wall extends below the second top structure to form an ellipse-shaped fourth opening in communication with the third opening. The second top structure of the second component is disposed at least partially inside the first top structure of the first component such that the second component is rotatably adjustable with respect to the first component.
