CT scan showing radiofrequency ablation of a liver lesion. RFA may be performed to treat tumors in the lung, liver, kidney, and bone, as well as other body organs less commonly. Once the diagnosis of tumor is confirmed, a needle-like RFA probe is placed inside the tumor.
After the completion of the iron staircase in the monument's interior, the Washington Monument was first accessible to the public in 1886, closed much of 1887 until it could be better protected from vandals, and reopened in 1888 with a public elevator.
Although symbolic of fine ideals, the history of the building of the Washington National Monument is actually a convoluted saga of conspiracy, intrigue and political sabotage. An original design for the monument was submitted by architect Robert Mills and approved in 1833.