Items tagged “hrct”

23 results found
Article

Crazy paving

Crazy paving refers to the appearance of ground-glass opacities with superimposed interlobular septal thickening and intralobular septal thickening, seen on chest HRCT or standard CT chest. It is a non-specific finding that can be seen in a number of conditions.  Pathology Etiology Common cau...
Case

Bronchiectasis

  Diagnosis certain
Frank Gaillard
Published 07 May 2008
62% complete
CT
Article

Cryptogenic organizing pneumonia

Cryptogenic organizing pneumonia (COP) is a disease of unknown etiology characterized on imaging by multifocal ground glass opacifications and/or consolidation. A wide variety of infectious as well as noninfectious causes may result in a similar histologic pattern. Terminology Organizing pneum...
Article

Intralobular septa

The intralobular septa (sing: septum) are delicate strands of connective tissue separating adjacent pulmonary acini and primary pulmonary lobules. They are continuous with the interlobular septa which surround and define the secondary pulmonary lobules.  See also HRCT terminology
Article

Pulmonary acinus

The pulmonary acinus is an anatomical unit of lung supplied by a first order respiratory bronchiole, 4-8 mm in diameter. Each secondary pulmonary lobule usually contains 3-25 acini, and adjacent acini are separated by incomplete intralobular septa. Clinical importance The component respiratory...
Article

Centrilobular region

The centrilobular region, in context of the lungs and HRCT, refers to the central portion of the secondary pulmonary lobule, around the central pulmonary artery and bronchiole.  See also HRCT terminology
Article

Pulmonary parenchymal bands

Parenchymal bands are a HRCT finding. They can be commonly encountered among patients with asbestosis. They are typically over 2 cm in length (up to 5 cm), 1-3 mm thick and run through the lung parenchyma and usually extend from a visceral pleural surface 6. They are formed in a number of ways ...
Article

Mosaic attenuation pattern in lung

Mosaic attenuation is a descriptive term used in describing a patchwork of regions of differing pulmonary attenuation on CT imaging. It is a non-specific finding, although is associated with the following: obstructive small airways disease: low attenuation regions are abnormal and reflect ...
Case

Pneumocystis pneumonia

  Diagnosis almost certain
Frank Gaillard
Published 15 Oct 2010
68% complete
CT
Article

Atoll sign (lungs)

The atoll sign or reversed halo sign refers to focal ground-glass opacity with a peripheral ring of consolidation which may be complete or incomplete. The sign was originally described in organizing pneumonia but can also occur in infections, infarction, granulomatous disease, inflammation and t...
Case

Severe bullous emphysema

  Diagnosis certain
Jeremy Jones
Published 11 May 2011
86% complete
CT
Case

Cholesteatoma

  Diagnosis probable
Roberto Schubert
Published 18 Nov 2011
36% complete
CT
Case

Bilateral tympanoplasty

  Diagnosis certain
Roberto Schubert
Published 02 Mar 2012
59% complete
CT
Case

Pulmonary manifestations of scleroderma

  Diagnosis almost certain
Mohammadtaghi Niknejad
Published 23 Nov 2012
83% complete
CT
Case

Non-specific interstitial pneumonia

  Diagnosis probable
Mohammadtaghi Niknejad
Published 08 Feb 2013
71% complete
CT
Case

Pulmonary fibrosis - usual interstitial pneumonia

  Diagnosis probable
Oliver Hennessy
Published 16 Mar 2015
71% complete
CT
Case

Usual interstitial pneumonia pattern: idiopathic pulmonary fibrosis

  Diagnosis certain
Hani Makky Al Salam
Published 14 Jul 2016
100% complete
X-ray CT
Case

Sarcoidosis

  Diagnosis certain
Henry Knipe
Published 25 Feb 2016
92% complete
CT X-ray
Case

Eosinophilic pneumonia: probable

  Diagnosis probable
Imad Awwad
Published 21 Aug 2016
68% complete
CT
Case

Idiopathic pulmonary fibrosis

  Diagnosis certain
Fabio Macori
Published 13 Dec 2017
95% complete
CT

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