Based on the context and the answer, generate a question. 

Context: The people who did her last treatment for the pleural effusion at Scarborough Gen. Did it wrong . they apparently fixed one lung and just drained the other instead of fixing it too . Everything my mom has ever had to have repeated at Princess Margaret , Toronto Gen , Etc .

Answer:

They were being somewhat sloppy but ultimately it was not an intentional decision on their part



What caused the doctors at the last hospital to botch the treatment of the pleural effusion ?