Carcinoma showing thymus-like differentiation of the parotid gland: The brief report of cytomorphology and review of the literature.

Here, we report an extremely rare case of carcinoma with thymus-like differentiation (CASTLE) of the parotid gland. CASTLE is a rare malignant epithelial tumor with thymic epithelial differentiation that arises in the thyroid gland or perithyroidal soft tissue. CASTLE of salivary gland origin is rare, with only nine published case reports to date (reported as "CASTLE" or "thymic carcinoma").

A study on preserving endometrial glandular architecture during preparation using BD SurePath™ liquid-based cytology reagents: Cellular fixation with preservative fluid requires at least 18 h.

Introduction: This study aimed to determine the causes of disruption of the three-dimensional architecture of endometrial glands prepared using BD SurePath™ liquid-based cytology (SP-LBC) reagents. One sample preparation method for endometrial cytology is presented in which this three-dimensional architecture can be retained.

Methods: SP-LBC specimens were prepared by the following three methods: (1) using the BD PrepMate (PrepMate) System after cellular fixation for 1-6 h (method A); (2) without using the PrepMate System after cellular fixation for 1-6 h (method B); and (3) using the PrepMate System after cellular fixation for at least 18 h (method C).