841 The Churchs relationship with the Muslims. The plan of salvation also includes those who acknowledge the Creator, in the first place amongst whom are the Muslims; these profess to hold the faith of Abraham, and together with us they adore the one, merciful God, mankinds judge on the last day.330
To even begin to suggest that Islam represents even a remote semblance of Catholic doctrine beggers belief. "Culling their own flock" is what these suicidal theologians persist in undertaking. Pun intended.
Let’s see what pre-Vatican II saints had to say about Islam:
http://www.freerepublic.com/focus/f-religion/3192145/posts
And pre-Vatican II popes: