What does "sintomas de cancer de mama" mean in English?

The phrase "sintomas de cancer de mama" means "symptoms of breast cancer" in English, according to Google Translate. The original phrase in Spanish has the same syntax when translated into English.

First, the Spanish noun "sintomas" means "symptoms" when translated into English. Next, the Spanish preposition "de" means "of" when translated into English. It appears twice in the original Spanish phrase, but appears only once in Google's English translation. Indeed, a completely word-for-word translation of the original Spanish phrase would be "symptoms of cancer of the breast," but it can appear shortened. Next, "cancer" is the same in both English and Spanish. Finally, the Spanish noun "mama" means "breast" when translated into English.