Successful Flexible Bronchoscopic Management of Dynamic Central Airway Obstruction by a Large Tracheal Carcinoid Tumor

Figure 3

Histopathology of the ablated tumor showing features of carcinoid. Tumor cells are arranged in nests with rich vascular stroma (a). They show salt and pepper type of nuclear chromatin (b). Immunohistochemistry shows positivity for synaptophysin (c) with increased proliferating (KI 67 labelling) index (d).

(a)

(b)

(c)

(d)