Many U.S. teachers think the answer is Liberia and Burma (make that Myanmar). Let's give Liberia and Myanmar a break! All countries have adopted the metric system, including the U.S., and most countries (but not the U.S.) have taken steps to eliminate most uses of traditional measurements. However, in nearly all countries people still use traditional units sometimes, at least in colloquial expressions.
Although breast calcifications are usually noncancerous (benign), certain patterns of calcifications â such as tight clusters with irregular shapes â may indicate breast cancer. On a mammogram, breast calcifications can appear as macrocalcifications or microcalcifications. 1  Macrocalcifications. 2  These show up as large white dots or dashes. 3  They're almost always noncancerous and require no further testing or follow-up.
Calcification can be the bodyâs protective response to injury, as well as part of a natural inflammatory reaction to infection, trauma, or autoimmune disorders. Also, tumors (cancerous or noncancerous) can result in calcification within the tumor tissue. Calcification becomes a problem when its location, shape or size interferes with the organ function, such as calcifications that harden and block blood vessels in the heart, brain and kidney. For example, with advancing age both the aortic and mitral valves can thicken and develop calcification deposits. This can lead to decreased efficiency in the heartâs pumping ability. Calcifications that are apparent on mammograms may signal the presence of breast cancer, or they may occur with benign breast disease.