Tubular breasts also called as tuberous breasts or breast hypoplasia, is a condition caused by breast tissues did not grow properly during puberty. Tuberous breasts often lacks symmetry, and one will appear noticeably larger than the other. Tuberous breasts often appear tubular in shape and hence are called tubular breasts as well. The breast tissues are fused underneath and hence prevent breast to grow normally. It is often accompanied by stretching of nipple areola complex.