Clinical Classification of Pulmonary Calcification and Ossification Proposed Mechanisms of Ectopic Lung Calcification and Ossification Role of Relative and Absolute Calcium Excess Role of an Alkaline Environment Role of Lung Injury or Fibrosis Role of Angiogenesis Imaging Chest Roentgenogram Computed Tomography 99m Tc-MDP Bone Scintigraphy Specific Disorders Pulmonary Metastatic Calcification P...

The carcass of a stranded southern right whale Eubalaena australis, discovered on the coast of Golfo Nuevo in Península Valdés, Argentina, exhibited extensive orthotopic and heterotopic ossification, osteochondroma-like lesions, and early degenerative joint disease. Extensive soft tissue ossification led to ankylosis of the axial skeleton in a pattern that, in many respects, appeared more simil...

Ossification of the Achilles tendon is a rare clinical condition characterized by the presence of one or more segments of variable sized ossified mass within the tendon. The cause of the condition is obscure. We present the case of a 41 year-old male patient with pain in the Achilles tendon due to bilateral ossification of the tendon near the calcaneus insertion. The case was evaluated by ultr...

The lacunar skull is a fetal ossification disorder first defined in the early 19th century, commonly associated with spina bifida and meningocele, rarely seen as an isolated defect. It characterized by defects on inner table of skull, form shallow depressions or deep cavitations causes to appear fenestrated because mesenchymal dysplasia during intramembranous ossification. These bone may be pre...

This is a case of idiopathic pulmonary calcification and ossification in a 70 year old with long-standing diabetes and hypertension. Thirteen years prior to her demise, she was first noticed to have multiple calcific deposits in her lungs on a chest X-ray film. She had no risk factors for soft tissue calcification and ossification. Histology of tissue from autopsy showed intraparenchymal pulmon...

REFERENCES 1 Lara JF, Catroppo JF, Kim DU, et al. Dendriform pulmonary ossification, a form of diffuse pulmonary ossification: report of a 26year autopsy experience. Arch Pathol Lab Med 2005; 129: 348–353. 2 Jaderborg JM, Dunton RF. Rare clinical diagnosis of dendriform pulmonary ossification. Ann Thorac Surg 2001; 71: 2009–2011. 3 Felson B, Schwarz J, Lukin RR, et al. Idiopathic pulmonary ossi...

3 INSERTION OF THE CORACO-ACROMIAL LIGAMENT IN THE ACROMION: HISTOLOGIC STUDY OF THE DEGENERATIVE ENDOCHONDRAL OSSIFICATION O. Lech, MD, J. Barbosa, MD, A. Gailit, Jr, MD, and A. Marcolan, MD; Instituto de Ortopedia e Traumatologia de Passo Fundo, RS, Brazil The authors evaluate the incidence of degenerative endochondral ossification at the insertion of the coraco-acromial ligament (CAL) in the...

BACKGROUND For nearly a century, the mechanical failure of calcified heart valves was attributed to a passive degenerative process. Recently, several case reports described bone formation in surgically excised heart valves and suggested an unexpected process of tissue repair. METHODS AND RESULTS We studied the prevalence and pathology of heterotopic ossification in 347 surgically excised hear...