Fig. 4
From: Pulmonary mucoepidermoid carcinoma arising in a patient with Kartagener syndrome
Pathological findings of the resected tumor. a: An opalescent tumor at the right bronchus was identified at the macroscopic scale (indicated by an arrow). b: A polypoid tumor successively arising from bronchial glands infiltrated into the bronchial cartilage without extrabronchial spread (hematoxylin and eosin staining, 5×). c, d: Mucoepidermoid carcinoma with mixed mucus-producing and squamous epithelia proliferated in a glandular-forming manner (c hematoxylin and eosin staining, 100×; d Alcian blue-periodic acid-Schiff staining, 100×)