“…1,5 Other influences, such as angiogenesis, chronic venous congestion, and abnormal mineral metabolism, may play a role as well. 1,5,6 There are two types of ossification, localized and diffuse. The localized type refers to focal deposition of bone within or adjacent to lung tissue injured by any kind of disease process, mainly including lung abscess, tuberculosis and other infectious, or parasitic diseases, trauma, primary tumors, and metastatic cancer.…”