PMC6460740_01
Contrast-enhanced CT-scan showing an air-filled communication between trachea and mediastinum
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Fig1
The diagnosis was confirmed by a CT scan (Fig. 1) and the fistula was treated with the endoscopic insertion of a silicone stent. 
Transversal section of the trachea with evidence of wall disruption
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Fig2
Sections of the hearth at ventricular level, with evidence of metastases at the interventricular septum and the walls of the right and the left ventricle
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Fig3
Left: low power picture of the wall of left ventricle with evidence of metastatic infiltration (Hematoxylin & Eosin, 4X). Right: the same field at 10X
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Fig4