Research Article

Imaging Features and Pathological Analysis of 43 Parotid Basal Cell Adenomas

Figure 2

A 68-year-old woman with a trabecular-type BCA. (a) A 68-year-old woman with a regular, ill-defined, hypoechoic, heterogeneous mass without posterior enhancement in the right parotid gland. (b) Intramodular prominent vascularity on Doppler B. (c) Plain computed tomography scan showing a regular, ill-defined mass with uneven low density. One of the trabecular type with extensive cribriform structures. (d) Computed tomography angiography (CTA): continuous heterogeneous enhancement in the arterial and venous phases. (e) (trabecular) neoplastic basal-like cells are arranged in a cord-like structure (×200). (f) Trabecular mass with extensive cribriform structures (×200); Scar bar. (g) Tumor cells invading the nerves (×100).