This code system http://hl7.org/fhir/us/breast-radiology/CodeSystem/MarginCS defines the following codes:
| Code | Display | Definition |
| AngularMargin | Angular margin | Some or all of the margin has sharp corners, often
forming acute angles.
The margin of the mass is not circumscribed.
Valid for the following modalities: US. |
| CircumscribedMargin | Circumscribed margin | A circumscribed margin is one that is well defined,
with an abrupt transition between
the lesion and the surrounding tissue.
For US, to describe a mass as circumscribed, its
entire margin must be sharply defined.
Most circumscribed lesions have round or oval shapes.
[Breast Imaging Reporting and Data System—Mammography, Fifth Edition page 49]
Valid for the following modalities: MG US MRI. |
| IndistinctMargin | Indistinct margin | There is no clear demarcation of the entire margin,
or of any portion of the margin,
from the surrounding
tissue.
For mammography, this descriptor should not be used
when the interpreting
physician believes it is likely due to immediately
adjacent breast tissue.
Use of this descriptor
usually implies a suspicious finding.
[Breast Imaging Reporting and Data System—Ultrasound, Second Edition page 23]
Valid for the following modalities: MG US. |
| IntraductalExtension | Intraductal extension | Intraductal tumor extension is a characteristic feature
of primary breast carcinoma,
and is an important consideration in patients undergoing
breast conservative surgery.
[https://www.ncbi.nlm.nih.gov/pubmed/8630874]
Valid for the following modalities: US. |
| IrregularMargin | Irregular margin | Edges around the soft tissue that don't look smooth.
Indicative of some sort of growth or mass rather
than a cyst.
Valid for the following modalities: MG US MRI. |
| LobulatedMargin | Lobulated margin | The edge of the mass has broad bulges.
Much like a 6 or 8 leaf clover.
The edge of all of the leaves would be considered
lobulated.
Valid for the following modalities: US. |
| MacrolobulatedMargin | Macrolobulated margin | Smooth margin with distinct separation between the
mass and the surrounding border.
Macrolobulaed margins are oval-shaped and have
a wide rather than tall formation.
Valid for the following modalities: MG. |
| MicrolobulatedMargin | Microlobulated margin | The margin is characterized by short-cycle undulations
or scalloped appearance,and
the margin of the mass is not circumscribed.
[Breast Imaging Reporting and Data System—Mammography, Fifth Edition page 54]
Valid for the following modalities: MG US. |
| NonCircumscribedMargin | Non circumscribed margin | The mass has one or more of the following features:
indistinct,
angular, microlobulated, or spiculated in any portion
of the margin There is not a clear demarcation between
the mass and the surrounding
tissue.
[Breast Imaging Reporting and Data System—Mammography, Fifth Edition page 153]
Valid for the following modalities: US MRI. |
| ObscuredMagin | Obscured magin | It is hidden by superimposed or adjacent fibroglandular
tissue.
This is used primarily when some of the margin of
the mass is circumscribed, but
the rest (more than 25%) is hidden.
Valid for the following modalities: MG. |
| SmoothMargin | Smooth margin | The edges of the mass have a smooth appearance and
distinct separation between the
mass and surrounding tissue.
Valid for the following modalities: US MRI. |
| SpiculatedMargin | Spiculated margin | The margin is characterized by sharp lines radiating
from the mass, often a sign
of malignancy,
but the significant feature is that the margin of
the mass is not circumscribed.
[Breast Imaging Reporting and Data System—Mammography, Fifth Edition page 55]
Valid for the following modalities: MG US MRI. |
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