Thyroid-like papillary adenocarcinoma of the nasopharynx: a case report in a 19-year-old male.

Primary thyroid-like papillary adenocarcinomas of the nasopharynx are rare, with only a limited number of cases reported in the literature. However, it is important that pathologists and clinicians alike recognize this entity, as these neoplasms are amenable to surgical resection and carry an excellent prognosis. In this article, we describe the case of a thyroid-like papillary adenocarcinoma of the nasopharynx in a 19-year-old male, with emphasis on clinical findings, histologic and immunohistochemical characteristics, and prognosis.

The role of CD11c expression in the diagnosis of mantle cell lymphoma.

Flow cytometric immunophenotyping (FCI) aids in the differentiation of chronic lymphocytic leukemia (CLL) from mantle cell lymphoma (MCL); however, overlapping phenotypes may occur. CD11c expression has been reported in up to 90% of CLL cases but has rarely been reported in MCL. Whether CD11c can be used to exclude MCL has not been directly addressed.