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Thoracic imaging terms (I)

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clarifying the most used radiological terms in chest imaging,its meaning,differential diagnosis,and pathological correlation

clarifying the most used radiological terms in chest imaging,its meaning,differential diagnosis,and pathological correlation

Published in Health & Medicine
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  • 1. Terms for ThoracicImaging ..Unifying the language. Part I Dr/Ahmed Bahnassy Consultant Radiologist –RMH. MBCHB-MD-FRCR.
  • 2. Members of the Fleischner Societycompiled a glossary of terms for thoracicimaging that replaces previous glossariespublished in 1984 and 1996 for thoracicradiography and computed tomography(CT), respectively.
  • 3. bronchiectasisBronchiectasis is irreversiblelocalized or diffuse bronchial dilatation,usually resulting from chronic infection,proximal airway obstruction, orcongenital bronchial abnormality
  • 4. signet ring signThis finding iscomposed of a ring-shaped opacityrepresenting a dilatedbronchus in crosssection and a smalleradjacent opacityrepresenting itspulmonary artery, withthe combinationresembling a signet (orpearl) ring
  • 5. bronchoceleA bronchocele is bronchialdilatation due to retained secretions(mucoid impaction) usually caused byproximal obstruction, either congenital(eg, bronchial atresia) or acquired (eg,obstructing cancer)
  • 6. bronchocentricThis descriptor is applied todisease that is conspicuously centered on macroscopic bronchovascular bundlesExamples of diseases witha bronchocentric distribution include :sarcoidosis , Kaposi sarcoma ,and organizing pneumonia .
  • 7. bullaAirspace measuringmore than 1 cm—usually several centimeters—in diameter, sharply demarcated by a thin wall that is no greaterthan 1 mm in thickness. A bulla is usually accompanied by emphysematous changes in the adjacent lung.
  • 8. cavityA cavity is a gas-filled space, seen as a lucency or low-attenuation area, within pulmonary consolidation, a mass, or a nodule
  • 9. centrilobular emphysemaCentrilobularemphysema is characterized by:destroyedcentrilobularalveolar walls andenlargementof respiratorybronchioles andassociated alveoli
  • 10. cystA cyst is any round circumscribed space that is surrounded by an epithelial or fibrous wall of variable thickness
  • 11. mycetomaA mycetoma is a discretemass of intertwined hyphae, usually ofan Aspergillus species, matted togetherby mucus, fibrin, and cellular debris colonizing a cavity, usually from prior fibrocavitary disease (eg, tuberculosis or sarcoidosis)
  • 12. tree-in-bud patternThe tree-in-bud pattern represents centrilobular branching structures that resemble a budding tree. The pattern reflects a spectrum of endo- and peribronchiolar disorders, including mucoid impaction, inflammation, and/or fibrosis