|
Code
|
Display
|
Definition
|
|
112110
|
Kerley B line |
A straight linear opacity 1.5-2 cm in length and 1-2 mm in width, usually at the lung base [Fraser and Pare]. |
|
112111
|
Kerley C lines |
A group of branching, linear opacities producing the appearing of a fine net, at the lung base [Fraser and Pare]. |
|
112112
|
Parenchymal band |
Elongated opacity, usually several millimeters wide and up to about 5 cm long, often extending to the pleura, which may be thickened and retracted at the site of contact [Fraser and Pare]. |
|
112113
|
Reticular pattern |
A collection of innumerable small linear opacities that together produce an appearance resembling a net [Fraser and Pare]. |
|
112114
|
Septal line(s) |
Usually used in the plural, a generic term for linear opacities of varied distribution produced when the interstitium between pulmonary lobules is thickened [Fraser and Pare]. |
|
112115
|
Subpleural line |
A thin curvilinear opacity, a few millimeters or less in thickness, usually less than 1 cm from the pleural surface and paralleling the pleura [Fraser and Pare]. |
|
112116
|
Tramline shadow |
Parallel or slightly convergent linear opacities that suggest the planar projection of tubular structures and that correspond in location and orientation to elements of the bronchial tree [Fraser and Pare]. |
|
112117
|
Tubular shadow |
Paired, parallel, or slightly convergent linear opacities presumed to represent the walls of a tubular structure seen en face; used if the anatomic nature of a shadow is obscure [Fraser and Pare]. |
|
112118
|
Density |
The opacity of a radiographic shadow to visible light; film blackening; the term should never be used to mean an "opacity" or "radiopacity" [Fraser and Pare]. |
|
112119
|
Dependent opacity |
Subpleural increased attenuation in dependent lung. The increased attenuation disappears when the region of lung is nondependent; a.k.a. dependent increased attenuation [Fraser and Pare]. |
|
112102
|
Aortic knob |
The portion of the aortic arch that defines the transition between its ascending and descending limbs. |
|
112103
|
Arch of the Azygos vein |
Section of Azygos vein near the fourth thoracic vertebra, where it arches forward over the root of the right lung, and ends in the superior vena cava, just before that vessel pierces the pericardium. |
|
112104
|
Air-fluid level |
A local collection of gas and liquid that, when traversed by a horizontal X-Ray beam, creates a shadow characterized by a sharp horizontal interface between gas density above and liquid density below [Fraser and Pare]. |
|
112105
|
Corona radiata |
A circumferential pattern of fine linear spicules, approximately 5 mm long, extending outward from the margin of a solitary pulmonary nodule through a zone of relative lucency [Fraser and Pare]. |
|
112106
|
Honeycomb pattern |
A number of closely approximated ring shadows representing air spaces 5-10 mm in diameter with walls 2-3 mm thick that resemble a true honeycomb; implies "end-stage" lung [Fraser and Pare]. |
|
112107
|
Fleischner's line(s) |
A straight, curved, or irregular linear opacity that is visible in multiple projections; usually situated in the lower half of the lung; vary markedly in length and width [Fraser and Pare]. |
|
112108
|
Intralobular lines |
Fine linear opacities present in a lobule when the intralobular interstitium is thickened. When numerous, they may appear as a fine reticular pattern [Fraser and Pare]. |
|
112109
|
Kerley A line |
Essentially straight linear opacity 2-6 cm in length and 1-3 mm in width, usually in an upper lung zone [Fraser and Pare]. |
|
112130
|
Mosaic pattern |
Generalized pattern of relatively well defined areas in the lung having different X-Ray attenuations due to a longstanding underlyingpulmonary disease. |
|
112120
|
Ground glass opacity |
Hazy increased attenuation of lung, but with preservation of bronchial and vascular margins; caused by partial filling of air spaces, interstitial thickening, partial collapse of alveoli, normal expiration, or increased capillary blood volume [Fraser and Pare]. |
|
112121
|
Infiltrate |
Any ill-defined opacity in the lung [Fraser and Pare]. |
|
112122
|
Micronodule |
Discrete, small, round, focal opacity of at least soft tissue attenuation and with a diameter no greater than 7 mm [Fraser and Pare]. |
|
112001
|
Opacity |
The shadow of an absorber that attenuates the X-Ray beam more effectively than do surrounding absorbers. In a radiograph, any circumscribed area that appears more nearly white (of lesser photometric density) than its surround [Fraser and Pare]. |
|
112123
|
Phantom tumor (pseudotumor) |
A shadow produced by a local collection of fluid in one of the interlobar fissures, usually elliptic in one radiographic projection and rounded in the other, resembling a tumor [Fraser and Pare]. |
|
112124
|
Shadow |
Any perceptible discontinuity in film blackening attributed to the attenuation of the X-Ray beam by a specific anatomic absorber or lesion on or within the body of the patient; to be employed only when more specific identification is not possible [Fraser and Pare]. |
|
112004
|
Abnormal interstitial pattern |
A collection of opacities detected within the continuum of loose connective tissue throughout the lung, that is not expected in a diagnostically normal radiograph. |
|
112125
|
Small irregular opacities |
Term used to define a reticular pattern specific to pneumoconioses [Fraser and Pare]. |
|
112126
|
Small rounded opacities |
Term used to define a nodular pattern specific to pneumoconioses [Fraser and Pare]. |
|
112127
|
Tree-in-bud sign |
Nodular dilation of centrilobular branching structures that resembles a budding tree and represents exudative bronchiolar dilation [Fraser and Pare]. |
|
112128
|
Granular pattern |
Any extended, finely granular pattern of pulmonary opacity within which normal anatomic details are partly obscured [Fraser and Pare]. |
|
112129
|
Miliary pattern |
A collection of tiny discrete opacities in the lungs, each measuring 2 mm or less in diameter, generally uniform in size and widespread in distribution [Fraser and Pare]. |
|
112073
|
Halo sign |
Ground-glass opacity surrounding the circumference of a nodule or mass. May be a sign of invasive aspergillosis or hemorrhage of various causes [Fraser and Pare]. |
|
112070
|
Air bronchiologram |
Equivalent of air bronchogram, but in airways assumed to be bronchioles because of peripheral location and diameter [Fraser and Pare]. |
|
112071
|
Air bronchogram |
Radiographic shadow of an air-containing bronchus; presumed to represent an air-containing segment of the bronchial tree (identity often inferred) [Fraser and Pare]. |
|
112072
|
Air crescent |
Air in a crescentic shape in a nodule or mass, in which the air separates the outer wall of the lesion from an inner sequestrum, which most commonly is a fungus ball of Aspergillusspecies [Fraser and Pare]. |
|
112065
|
Reticulonodular pattern |
A collection of innumerable small, linear, and nodular opacities that together produce a composite appearance resembling a net with small superimposed nodules. The reticular and nodular elements are dimensionally of similar magnitude [Fraser and Pare]. |
|
112066
|
Beaded septum sign |
Irregular septal thickening that suggests the appearance of a row of beads; usually a sign of lymphangitic carcinomatosis, but may also occur rarely in sarcoidosis [Fraser and Pare]. |
|
112067
|
Nodular pattern |
A collection of innumerable, small discrete opacities ranging in diameter from 2-10 mm, generally uniform in size and widespread in distribution, and without marginal spiculation [Fraser and Pare]. |
|
112068
|
Pseudoplaque |
An irregular band of peripheral pulmonary opacity adjacent to visceral pleura that simulates the appearance of a pleural plaque and is formed by coalescence of small nodules [Fraser and Pare] . |
|
112069
|
Signet-ring sign |
A ring of opacities (usually representing a dilated, thick-walled bronchus) in association with a smaller, round, soft tissue opacity (the adjacent pulmonary artery) suggesting a "signet ring" [Fraser and Pare]. |
|
112172
|
Portacath |
Connected to an injection chamber placed under the skin in the upper part of the chest. When it is necessary to inject some drug, a specific needle is put in the chamber through the skin and a silicon membrane. The advantage of a portacath is that it may be left in place several months contrarily of "classical" catheters. |
|
112173
|
Chest tube |
A tube inserted into the chest wall from outside the body, for drainage. Sometimes used for collapsed lung. Usually connected to a receptor placed lower than the insertion site. |
|
112174
|
Central line |
A tube placed into the subclavian vein to deliver medication directly into the venous system. |
|
112175
|
Kidney stent |
A stent is a tube inserted into another tube. Kidney stent is a tube that is inserted into the kidney, ureter, and bladder, to help drain urine. Usually inserted through a scoping device presented through the urethra. |
|
112054
|
Secondary pulmonary lobule |
The smallest unit of lung surrounded by connective tissue septa; the unit of lung subtended by any bronchiole that gives off three to five terminal bronchioles [Fraser and Pare]. |
|
112176
|
Pancreatic stent |
A stent is a tube inserted into another tube. Pancreatic stent is inserted through the common bile duct to the pancreatic duct, to drain bile. |
|
112177
|
Nipple ring |
A non-lesion object that appears to be a circular band, attached to the body via pierced nipple. |
|
112178
|
Coin |
A non-lesion object that appears to be a flat round piece of metal. |
|
112171
|
Fiducial mark |
A location in image space, which may or may not correspond to an anatomical reference, which is often used for registering data. |
|
112059
|
Primary complex |
The combination of a focus of pneumonia due to a primary infection with granulomas in the draining hilar or mediastinal lymph nodes [Fraser and Pare]. |
|
112095
|
Hiatus |
A gap or passage through an anatomical part or organ; especially: a gap through which another part or organ passes. |
|
112090
|
Azygoesophageal recess interface |
A space in the right side of the mediastinum into which the medial edge of the right lower lobe extends [Fraser and Pare]. |
|
112091
|
Paraspinal line |
A vertically oriented interface usually seen in a frontal chest radiograph to the left of the thoracic vertebral column [Fraser and Pare]. |
|
112092
|
Posterior tracheal stripe |
A vertically oriented linear opacity ranging in width from 2-5 mm, extending from the thoracic inlet to the bifurcation of the trachea, and visible only on lateral radiographs of the chest [Fraser and Pare]. |
|
112093
|
Right tracheal stripe |
A vertically oriented linear opacity approximately 2-3 mm wide extending from the thoracic inlet to the right tracheobronchial angle [Fraser and Pare]. |
|
112094
|
Stripe |
A longitudinal composite opacity measuring 2-5 mm in width; acceptable when limited to anatomic structures within the mediastinum [Fraser and Pare]. |
|
112084
|
Lucency |
The shadow of an absorber that attenuates the primary X-Ray beam less effectively than do surrounding absorbers. In a radiograph, any circumscribed area that appears more nearly black (of greater photometric density) than its surround [Fraser and Pare]. |
|
112085
|
Midlung window |
A midlung region, characterized by the absence of large blood vessels and by a paucity of small blood vessels, that corresponds to the minor fissure and adjacent peripheral lung [Fraser and Pare]. |
|
112086
|
Carina angle |
The angle formed by the right and left main bronchi at the tracheal bifurcation [Fraser and Pare]. |
|
112087
|
Centrilobular structures |
The pulmonary artery and its immediate branches in a secondary lobule; HRCT depicts these vessels in certain cases; a.k.a. core structures or lobular core structures [Fraser and Pare]. |
|
112088
|
Anterior junction line |
A vertically oriented linear or curvilinear opacity approximately 1-2 mm wide, commonly projected on the tracheal air shadow [Fraser and Pare]. |
|
112089
|
Posterior junction line |
A vertically oriented, linear or curvilinear opacity approximately 2 mm wide, commonly projected on the tracheal air shadow, and usually slightly concave to the right [Fraser and Pare]. |
|
112082
|
Interface |
The common boundary between the shadows of two juxtaposed structures or tissues of different texture or opacity (edge, border) [Fraser and Pare]. |
|
112083
|
Line |
A longitudinal opacity no greater than 2 mm in width [Fraser and Pare]. |