A medical student just finished her last semester

A medical student just finished her last semester and was heading out to apply to a hospital. The director of the hospital thought the woman was very bright and had a lot of potential. But the doctor wanted to ask her a few questions just to quiz her. 

"Well." said the doctor, "you seem very qualified. But a few questions before we make anything definite, ok?" "Of course," said the woman. "Ok, what do we call the operation of removing your tonsils?" asked the director "That's easy," the woman said, "A Tonsillectomy." 

"Very good. ok, What is the removal of your appendix called?"the director continued. "I believe that is an Appendectomy," the woman said confidentially "Good job. One more. What do we call a sex change operation?" the director asked. Now the woman was very intelligent and she learned every medical term known to man, but for some reason she could not remember what a sex change operation was called. She sat staring at the wall for some time before the director began to get anxious. 

"Do you know?" he asked repeatedly. 

Regaining her composure she finally smiled and said, "of course, Addadictomy."