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Paratracheal air cysts: sonographic findings in two cases.

Kim YJ, Kim EK, Kim J, Park CS - Korean J Radiol (2003 Apr-Jun)

Bottom Line: The cysts were located at the inferoposterior aspect of the right lobe of the thyroid.Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications.Neck CT confirmed the presence of an ill-defined air pocket which communicated with the trachea through a slit.

View Article: PubMed Central - PubMed

Affiliation: Department of Diagnostic Radiology, Research Institute of Radiological Science, Seodaemun-gu, Seoul, Korea.

ABSTRACT
We report two cases of paratracheal air cyst discovered incidentally at neck ultrasonography and confirmed at CT. The cysts were located at the inferoposterior aspect of the right lobe of the thyroid. Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications. Neck CT confirmed the presence of an ill-defined air pocket which communicated with the trachea through a slit.

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A 43-year-old woman who underwent a routine medical checkup.A, B. Transverse (A) and longitudinal (B) sonograms of the neck depict a 2.9 × 1.4 - cm hypoechoic mass (thick arrows) with multiple hyperechoic foci (thin arrow) at the inferoposterior aspect of the right lobe of the thyroid gland.C. Neck CT shows an air-filled cyst (arrow) with an irregular wall to the right of the trachea.D. Reformatted coronal CT image depicts slit-like communication (arrowhead) between the trachea and the air cyst.(A=right common carotid artery, C=paratracheal air cyst, E=esophagus, T=trachea)
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Figure 1: A 43-year-old woman who underwent a routine medical checkup.A, B. Transverse (A) and longitudinal (B) sonograms of the neck depict a 2.9 × 1.4 - cm hypoechoic mass (thick arrows) with multiple hyperechoic foci (thin arrow) at the inferoposterior aspect of the right lobe of the thyroid gland.C. Neck CT shows an air-filled cyst (arrow) with an irregular wall to the right of the trachea.D. Reformatted coronal CT image depicts slit-like communication (arrowhead) between the trachea and the air cyst.(A=right common carotid artery, C=paratracheal air cyst, E=esophagus, T=trachea)

Mentions: Neck ultrasonography revealed a 2.9×1.4-cm hypoechoic mass at the inferoposterior aspect of the right lobe of the thyroid (Figs. 1A, B). The lesion, located outside the thyroid capsule, had an ill-demarcated margin and contained multiple hyperechoic foci which appeared to be small calcifications. The thyroid gland was normal in echogenicity and size, and no focal lesion was observed. Cervical lymphadenopathy was absent.


Paratracheal air cysts: sonographic findings in two cases.

Kim YJ, Kim EK, Kim J, Park CS - Korean J Radiol (2003 Apr-Jun)

A 43-year-old woman who underwent a routine medical checkup.A, B. Transverse (A) and longitudinal (B) sonograms of the neck depict a 2.9 × 1.4 - cm hypoechoic mass (thick arrows) with multiple hyperechoic foci (thin arrow) at the inferoposterior aspect of the right lobe of the thyroid gland.C. Neck CT shows an air-filled cyst (arrow) with an irregular wall to the right of the trachea.D. Reformatted coronal CT image depicts slit-like communication (arrowhead) between the trachea and the air cyst.(A=right common carotid artery, C=paratracheal air cyst, E=esophagus, T=trachea)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2698072&req=5

Figure 1: A 43-year-old woman who underwent a routine medical checkup.A, B. Transverse (A) and longitudinal (B) sonograms of the neck depict a 2.9 × 1.4 - cm hypoechoic mass (thick arrows) with multiple hyperechoic foci (thin arrow) at the inferoposterior aspect of the right lobe of the thyroid gland.C. Neck CT shows an air-filled cyst (arrow) with an irregular wall to the right of the trachea.D. Reformatted coronal CT image depicts slit-like communication (arrowhead) between the trachea and the air cyst.(A=right common carotid artery, C=paratracheal air cyst, E=esophagus, T=trachea)
Mentions: Neck ultrasonography revealed a 2.9×1.4-cm hypoechoic mass at the inferoposterior aspect of the right lobe of the thyroid (Figs. 1A, B). The lesion, located outside the thyroid capsule, had an ill-demarcated margin and contained multiple hyperechoic foci which appeared to be small calcifications. The thyroid gland was normal in echogenicity and size, and no focal lesion was observed. Cervical lymphadenopathy was absent.

Bottom Line: The cysts were located at the inferoposterior aspect of the right lobe of the thyroid.Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications.Neck CT confirmed the presence of an ill-defined air pocket which communicated with the trachea through a slit.

View Article: PubMed Central - PubMed

Affiliation: Department of Diagnostic Radiology, Research Institute of Radiological Science, Seodaemun-gu, Seoul, Korea.

ABSTRACT
We report two cases of paratracheal air cyst discovered incidentally at neck ultrasonography and confirmed at CT. The cysts were located at the inferoposterior aspect of the right lobe of the thyroid. Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications. Neck CT confirmed the presence of an ill-defined air pocket which communicated with the trachea through a slit.

Show MeSH
Related in: MedlinePlus