CID 7169 Brain Lesion Segmentation Type Without Necrosis

CID 7169 Brain Lesion Segmentation Type Without Necrosis (Current)
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Keyword:: BrainLesionSegmentationTypeWithoutNecrosis
FHIR Keyword:: dicom-cid-7169-BrainLesionSegmentationTypeWithoutNecrosis
Type:: Extensible
Version:: 20190327
UID:: 1.2.840.10008.6.1.1281

Table CID 7169. Brain Lesion Segmentation Type Without Necrosis

Coding Scheme Designator	Code Value	Code Meaning	SNOMED-RT ID	UMLS Concept Unique ID
DCM	125040	Background
SCT	17621005	Normal	G-A460	C0205307
SCT	79654002	Edema	M-36300	C0013604
NCIt	C81175	Non-Enhancing Lesion		C2825493
NCIt	C113842	Enhancing Lesion		C3830314

The concept (17621005, SCT, "Normal") is a general normality qualifier used here in context to mean normally appearing brain tissue on an imaging study. Some coding schemes contain more specific concepts such as "normal tissue" (but may be part of a coding scheme for histopathology rather than imaging) or "normal brain" or "normal white matter". Normal may be distinguished from background (e.g., where there is no tissue at all).
A generic concept for edema is used for consistency with other segmentation-related Context Groups, rather than a more specific anatomy or tumor-related concept such as (C121674, NCIt , "Peritumoral Brain Edema") UMLS:C4054192.
The same concept for non-enhancing tumor is used in this Context Group and when included in CID 7168 “Brain Lesion Segmentation Type With Necrosis”. When used in this Context Group, non-enhancing tumor includes any necrotic region, whereas when used in CID 7168, it does not.

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