PMC6158966_01
Ultrasound examination shows a 39 x 30 x 44-mm sized monocystic lesion in the mediastinum, in which the aortic arch was displaced upward.
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An US examination revealed a 39 x 30 x 44-mm sized monocystic lesion in the mediastinum, in which the aortic arch was displaced upward (Figure 1).
T2-weighted magnetic resonance imaging shows fetal cystic lesion located in the posterior mediastinum without communication to surrounding organs.
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Magnetic resonance imaging (MRI) revealed that a fetal cystic lesion was located in the posterior mediastinum without communication to surrounding organs (Figure 2).
Four weeks after delivery, the neonate was admitted because of respiratory distress due to mass effect. Computed tomography scans (right panel: age 2 days, left panel: age 4 weeks) show enlargement of the mediastinal cystic lesion.
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CT scan revealed enlargement of the mediastinal cystic lesion (Figure 3), and surgery was performed.
A 105 x 65 mm of solitary smooth-walled cyst containing serosanguineous fluid was excised completely (right panel). Histologic examination shows an inner lining of gastric mucosa and an outer smooth muscle coat (left panel), leading to the diagnosis of the mediastinal gastric duplication cyst.
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Histologic examination revealed an inner lining of gastric mucosa and an outer smooth muscle coat (Figure 4), leading to the diagnosis of the mediastinal gastric duplication cyst.