Renal and adrenal masses containing fat at MRI: Proposed nomenclature by the society of abdominal radiology disease-focused panel on renal cell carcinoma.
Adipocytes
Adipose Tissue
/ diagnostic imaging
Adrenal Gland Neoplasms
/ diagnostic imaging
Adult
Algorithms
Angiomyolipoma
/ diagnostic imaging
Artifacts
Carbon
/ pharmacology
Carcinoma, Renal Cell
/ diagnostic imaging
Female
Humans
Kidney Neoplasms
/ diagnostic imaging
Magnetic Resonance Imaging
Male
Middle Aged
Radiology
/ standards
Societies, Medical
Terminology as Topic
MRI
adrenal
carcinoma
fat
lipid
magnetic resonance imaging
renal
Journal
Journal of magnetic resonance imaging : JMRI
ISSN: 1522-2586
Titre abrégé: J Magn Reson Imaging
Pays: United States
ID NLM: 9105850
Informations de publication
Date de publication:
04 2019
04 2019
Historique:
received:
15
04
2018
revised:
16
09
2018
accepted:
17
09
2018
pubmed:
30
1
2019
medline:
26
8
2020
entrez:
30
1
2019
Statut:
ppublish
Résumé
This article proposes a consensus nomenclature for fat-containing renal and adrenal masses at MRI to reduce variability, improve understanding, and enhance communication when describing imaging findings. The MRI appearance of "macroscopic fat" occurs due to a sufficient number of aggregated adipocytes and results in one or more of: 1) intratumoral signal intensity (SI) loss using fat-suppression techniques, or 2) chemical shift artifact of the second kind causing linear or curvilinear India-ink (etching) artifact within or at the periphery of a mass at macroscopic fat-water interfaces. "Macroscopic fat" is most commonly observed in adrenal myelolipoma and renal angiomyolipoma (AML) and only rarely encountered in other adrenal cortical tumors and renal cell carcinomas (RCC). Nonlinear noncurvilinear signal intensity loss on opposed-phase (OP) compared with in-phase (IP) chemical shift MRI (CSI) may be referred to as "microscopic fat" and is due to: a) an insufficient amount of adipocytes, or b) the presence of fat within tumor cells. Determining whether the signal intensity loss observed on CSI is due to insufficient adipocytes or fat within tumor cells cannot be accomplished using CSI alone; however, it can be inferred when other imaging features strongly suggest a particular diagnosis. Fat-poor AML are homogeneously hypointense on T
Identifiants
pubmed: 30693607
doi: 10.1002/jmri.26542
pmc: PMC6980339
mid: NIHMS1063485
doi:
Substances chimiques
chinese ink
0
Carbon
7440-44-0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
917-926Subventions
Organisme : NCI NIH HHS
ID : R01 CA154475
Pays : United States
Informations de copyright
© 2019 International Society for Magnetic Resonance in Medicine.
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