PMC4681967_01
Chest Ct showed an Endobronchial tumor.
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A chest-CT scan showed a polypoid lesion in the precarinal region of the trachea, near the anterior wall of the trachea (Fig. 1).
An Endobronchial, hipervascularized mass on the anterior lower trachea.
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A flexible bronchoscopy (Olympus BF 1-T240) was performed, and on the bronchoscopic examination, a mass was observed arising from the anterior tracheal wall (just above the main carina), resulting in an 80% obstruction of the right mainstem bronchus take-off and 70% obstruction of the left mainstem bronchus take-off (Fig. 2).
a. Pathological study showed an eosinophilic cell deposited in a variable collagenous and myxoid matrix. b. Tumor immunohistochemistry was positive for both muscle-specific and smooth muscle actin and negative for cytokeratin AE1/3, chromogranin and synaptophysin.
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Thus, a carcinoid tumor was suspected (Fig. 3a). Immunohistochemistry was positive for both muscle-specific and smooth muscle actin and negative for cytokeratin AE1/3, chromogranin and synaptophysin (Fig. 3b).
a. Pathological study of subcutaneous lesion, similar finding to tracheal mass. b. Positive immunohistochemistry similar to tracheal mass.
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Subsequent immunohistochemical staining of the forearm lesion was consistent for the glomus tumor diagnosis (Fig. 4a and b).