Radiological and Clinical Features and Outcomes of Patients with Primary Pulmonary Salivary Gland-Type Tumors

Figure 3

A 22-year-old woman with low-grade mucoepidermoid carcinoma. (a) Unenhanced transaxial CT images showing a well-defined mass in the right lower bronchus with a crescent-shaped gap around the tumor (“air crescent sign”) (arrowheads). (b) Coronal oblique reconstruction image of contrast-enhanced CT shows an endobronchial long oval-like nodule (arrow); the direction of the longest diameter is parallel to the branching pattern with associated atelectasis of the right lower lobe. (c) In the contrast-enhanced transaxial CT, the mass shows marked enhancement (arrow). (d) Virtual bronchoscopy (VB) showing an intraluminal nodule wide base. (e) Gross pathologic specimen showing an intraluminal yellow-white nodule in the right lower bronchus (arrow). (f) Photomicrograph showing that the tumor consists of cells with little atypism or mitotic activity (H and E ×40).

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