Blood vessels -- The heart -- Hematopathology -- Red blood cell disorders -- The lung -- Head and neck -- The gastrointestinal tract -- The liver and biliary tract -- The pancreas -- The kidney -- The lower urinary tract -- The male genital tract -- The female genital tract -- The breast -- The endocrine system -- The skin -- Bones, joints, and soft tissue tumors -- Peripheral nerve and skeletal muscle -- The central nervous system -- The eye.