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Case Reports
. 2015 Jan 17;12(1):e15995.
doi: 10.5812/iranjradiol.15995. eCollection 2015 Jan.

A case of pulmonary artery hydatid cyst observed on endobronchial ultrasound

Affiliations
Case Reports

A case of pulmonary artery hydatid cyst observed on endobronchial ultrasound

Aysegul Senturk et al. Iran J Radiol. .

Abstract

Hydatid cyst (HC) is a parasitic disease that may involve many organs, especially the lung and the liver. Pulmonary artery location of the hydatid cyst is extremely rare, but it may cause life-threatening complications. We report a case of a hydatid cyst that completely filled the left main pulmonary artery and its distal part without cardiac involvement. Thoracic computed tomography showed filling defects in the pulmonary arteries. Endobronchial ultrasound was performed for differential diagnosis and it showed a cystic lesion. Hydatid cyst-specific IgE and hem agglutination test results were positive. In the literature, cases like this in which the diagnosis of pulmonary hydatid cyst is made by endobronchial ultrasound are not usually seen. Although many imaging modalities such as plain chest radiography, cross-sectional imaging (MDCT and MRI), echocardiography and conventional pulmonary angiography have been used in the diagnostic approach, we recommend endobronchial ultrasound for the differential diagnosis of cases with cystic formation.

Keywords: Endobronchial Ultrasound; Hydatid Cyst; Pulmonary Artery.

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Figures

Figure 1.
Figure 1.. A 48-year-old woman with a one-month history of cough. A-C, CT with contrast shows hypodense masses located in the left main, segmentary branches of the superior lobe and descending pulmonary artery; D, parenchymatous condensation in the superior segment of the lower lobe is seen.
Figure 2.
Figure 2.. An anechoic cystic lesion is seen inside the left pulmonary artery by EBUS. The cyst in the pulmonary artery is marked with * sign and the pulmonary artery is marked with # sign.
Figure 3.
Figure 3.. T1 Weighted mri with contrast in coronal; A, B, sagittal; C, and axial D, slices. The main and descending pulmonary arteries not being filled with contrast and hyperintense lesions suggest pulmonary artery hydatid cyst.
Figure 4.
Figure 4.. A, B, On control CT scan after one year of therapy, decrease of 7.9 mm in diameter of the cyst in the left pulmonary artery is seen

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