image: Many substances with different chemical and physical properties, from diamonds to graphite, are made up of carbon atoms. Amorphous forms of solid carbon do not have a fixed crystal structure ...

Carcinomas are the most common type of solid tumors in adults. In children, carcinomas (KAR-sih-NOH-muhs) are very rare. The doctors at MSK Kids treat more young people with carcinomas and other rare ...

Kidney stones are solid deposits of minerals that can form in the kidneys, also known as renal calculi. They can be made up of various types of crystals, with the most abundant crystal determining the ...