For the last eight years, he also served as Medical Director of the Breast Center at the NYP-affiliated Palisades Medical Center, in New Jersey. Dr. El-Tamer received his MD degree in 1981 from the American University of Beirut (AUB), in Lebanon, and completed his residency training at the AUB Medical Center. He did an additional residency at SUNY Downstate Medical Center and completed surgical fellowships at Memorial Sloan-Kettering. Tweet Widget breast (brest)Glandular organ located on the chest. The breast is made up of connective tissue, fat, and breast tissue that contains the glands that can make milk. Also called mammary gland.Source: The National Cancer Institute's Dictionary of Cancer Terms(http://www.cancer.gov/dictionary)