Additive and Subtractive

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What GI tract pathology is additive?

Achalasia

What GI tract pathology is subtractive?

Bowel obstruction

List the subtractive pathologies of the respiratory system.

COPD Chronic Obstructive Pulmonary Disorder

_____ is both additive and subtractive.

Cirrhosis

List the additive pathologies of the respiratory system.

Cystic fibrosis Hyaline membrane disease Pneumonia Bronchiectasis Tuberculosis Pneumoconioses Fungal disease Lung abscess Pleural effusion Sinusitis Bronchial adenoma Bronchogenic carcinoma Metastatic lung disease

List the subtractive pathologies of the skeletal system.

Osteogenisis imperfecta Osteomyelitis Tuberculosis Osteoarthritis Gouty arthritis Endochondroma Chondrosarcoma Psoriatic arthritis Gouty arthritis Aneurysmal bone cyst Unicameral bone cyst Osteoid osteoma Giant cell tumor

List the additive pathologies of the skeletal system.

Osteopetrosis Osteochondroma Osteoma Osteosarcoma Ankylosing spondylitis Healed infection arthritis

Describe subtractive pathologies

are those that decrease the density and/or atomic number of the structure making it easier to penetrate. image shows area of increased density.

Describe additive pathologies

are those that increase the density and/or atomic number of the structure making it more difficult to penetrate. image shows area of decreased density.

Which diseases of the hepatobiliary system are additive?

ascites, hepatoma, hepatocellular adenoma

Which diseases of the hepatobiliary system are subtractive?

fatty infiltration hepatocellular carccinoma metastic disease of liver carcinoma of pancreas

Is pleurisy additive or subtractive?

none


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