Phalloplasty is the construction or reconstruction of a penis, or the artificial modification of the penis by surgery, often for cosmetic purposes. The term phalloplasty is also occasionally used to refer to penis enlargement. The first phalloplasty done for the purposes of sexual reassignment was performed on trans man Michael Dillon in 1946 by Dr. Harold Gillies, which is documented in Pagan Kennedy's book The First Man-Made Man.