Carcinosarcoma of the deep lobe of the parotid gland in the parapharyngeal region: A case report

Figure 3 Histological features of carcinosarcoma (hematoxylin and eosin staining). A: The pleomorphic adenoma region had a rich tissue structure and mild cell morphological changes; B: In the salivary duct carcinoma area, comedo-like necrosis was seen in the center of the solid epithelial mass; C: In the sarcomatous area, the cells showed obvious atypia and abundant bone matrix formation around the cells; D: Pleomorphic adenoma (right) mixed with salivary duct carcinoma (left); E: Salivary duct carcinoma (right) mixed with osteosarcoma (left); F: A tumor thrombus was found in the venous lumen.