|Author||Santhosh, K. ♦ Thomas, Bejoy ♦ Varma, Luxmi ♦ Sandhyamani, S. ♦ Kesavadas, C. ♦ Appukuttan, P. S. ♦ Srinivas, G. ♦ Gupta, A. K. ♦ Kapilamoorthy, T. R. ♦ Unnikrishnan, M.|
|Source||Sree Chitra Tirunal Institute for Medical Sciences & Technology|
|Publisher||Journal of Magnetic Resonance Imaging|
|Subject Domain (in DDC)||Technology ♦ Medicine & health ♦ Diseases|
|Subject Domain (in MeSH)||Diagnosis ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment|
|Abstract||Foregut duplication cysts are developmental anomalies of the bronchopulmonary foregut and are common cystic lesions of the mediastinum. We describe a case of mediastinal foregut duplication cyst with in vivo H-1 MR spectroscopy on a 1.5T magnet showing a large metabolite peak at 2.02 ppm, attributable to N-acetylated compounds, in addition to a smaller peak at 1.33 ppm, considered to represent lipids. In vitro NMR spectroscopy (7.05T) of cyst fluid confirmed the presence of these peaks. In addition; a broad multiplet centered at 3.7 ppm, possibly from various protons of the hexose ring system, was also noted. Chemical analysis of the cyst fluid demonstrated the presence of N-acetylhexosamines, proteins, and lipids: Again, in vitro spectra of pure samples of N-acetylglucosamine and N-acetylgalactosamine were obtained for comparison, which better resolved the N-acetyl peak and the peaks at 3.7 ppm. The mucus secreted by respiratory epithelium and the mucous glands of the foregut cysts contains glycoproteins that have N-acetylhexosamines as components and lipid breakdown products that are thought to contribute to the observed spectrum. This information might be useful in predicting the cyst content and, in turn, the lining of the epithelium and the glandular elements.|
|Education Level||UG and PG|
|Learning Resource Type||Article|
|Educational Framework||Medical Council of India (MCI)|
|Journal||JOURNAL OF MAGNETIC RESONANCE IMAGING|
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