Brown fat distribution in the chest wall of infants-normal appearance, distribution and evolution on CT scans of the chest

Priya Gupta, Paul S. Babyn, Amer Shammas, Stephen Miller

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: While reviewing chest CT scans of infants, we repeatedly observed hyperdense enhancing tissue in the chest wall that is not well described in radiology literature. Objective: This study was undertaken to describe the imaging features of this tissue in chest walls of infants. Materials and methods: CT scans of the chest conducted on all infants between April 2008 and October 2009 were retrospectively reviewed. CT studies with any deviation from normal radiation or contrast dose or those with chest wall anatomical distortion were excluded. Results: One hundred eighty-eight infants were scanned, with 202 MDCTs, of which 180 (89.1%) received contrast agent. Fifty-four of 180 (30%) cases revealed focal areas of hyperdensity in various locations. All positive cases ranged between 2 days and 9 months of age. The areas of distribution of hyperdensity had excellent correlation with known areas of brown fat in the chest wall, known from nuclear medicine studies, and hence we concluded these to represent the same. Conclusion: Brown fat in the chest wall can be seen as enhancing tissue on contrast CT scans done on infants. This is a normal morphological component with the brown fat converting to normal fat. It is important to recognize it in the chest wall of infants to avoid misinterpretation.

Original languageEnglish (US)
Pages (from-to)1020-1027
Number of pages8
JournalPediatric radiology
Volume41
Issue number8
DOIs
StatePublished - Aug 1 2011

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Brown Adipose Tissue
Normal Distribution
Thoracic Wall
Thorax
Nuclear Medicine
Radiology
Contrast Media
Fats
Radiation

All Science Journal Classification (ASJC) codes

  • Pediatrics, Perinatology, and Child Health
  • Radiology Nuclear Medicine and imaging

Cite this

Brown fat distribution in the chest wall of infants-normal appearance, distribution and evolution on CT scans of the chest. / Gupta, Priya; Babyn, Paul S.; Shammas, Amer; Miller, Stephen.

In: Pediatric radiology, Vol. 41, No. 8, 01.08.2011, p. 1020-1027.

Research output: Contribution to journalArticle

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