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. 2012 Mar;33(3):434–438. doi: 10.3174/ajnr.A2807

Fig 2.

Fig 2.

A 40-year-old woman with type 2 BCA in the left parotid gland. A and B, CT shows a round, ill-defined lesion (white arrow) with a cystic component (black arrow) in the deeper region. C, The lesion shows as heterogeneously hypoechoic, with an anechoic region (arrowheads) on sonography. The superficial border of tumor is irregular and ill defined. D, Photomicrograph (hematoxylin-eosin stain; ×50) demonstrates tumor cystic region with hemorrhage (thick arrows) and collagen deposition (thin arrow). E, Specimen histology (hematoxylin-eosin stain; ×50) shows the tumor tissue (thick arrows), the infiltration of tumor cells into the capsule (arrowhead), and tumor cells in surrounding tissue (thin arrows).

HHS Vulnerability Disclosure