Breast Imaging Reporting - 2nd STU ballot, published by HL7 International - Clinical Interoperability Council. This is not an authorized publication; it is the continuous build for version 0.3.0). This version is based on the current content of https://github.com/HL7/fhir-breast-radiology-ig/ and changes regularly. See the Directory of published versions
This code system http://hl7.org/fhir/us/breast-radiology/CodeSystem/AsymmetryAbnormalityTypeCS defines the following codes:
Code
Display
Definition
Asymmetry
Asymmetry
Breast asymmetry refers to when one breast is a different
size or shape than the
other.
AsymmetryFocal
Asymmetry focal
Focal asymmetry is visible as a confined asymmetry
with a similar shape on two views
but does not fit the criteria of a mass: that is,
it lacks convex outer borders and
conspicuity.
In contrast to global asymmetry, it occupies a volume
of less than one quadrant of
the breast and is of more concern.
The frequency of finding focal asymmetry at screening
mammography is less than 1%.
[pubs.rsna.org]
AsymmetryGlobal
Asymmetry global
Global asymmetry in breast tissue is a form of breast
asymmetry where at least one
quadrant of a breast has a larger amount of fibroglandular
density than the corresponding
area in the contralateral breast.
DevelopingAsymmetry
Developing Asymmetry
A developing asymmetry is a focal asymmetry that
is new or increased in conspicuity
compared with the previous mammogram.
It is challenging to evaluate, as it often looks
similar to fibroglandular tissue
at mammography.
A developing asymmetry should be viewed with suspicion
because it is an uncommon
manifestation of breast cancer.
[pubs.rsna.org]