AIMS To study the immunohistochemical expression of carcinoembryonic antigen (CEA) in ductal hyperplasia of the breast and to investigate its putative relation with atypia and co-existing infiltrating ductal carcinoma. METHODS Paraffin wax embedded tissue from 37 cases of isolated ductal hyperplasia (five with atypia and 32 without atypia) and 25 cases of ductal hyperplasia associated infiltr...

Introduction: Papillary thyroid carcinoma (PTC) is the most common malignant neoplasm of neck. Most cases PTC are diagnosed based on pathologic criteria. However, few lesions that mimic nuclear features or architecture pose diagnostic problems. projections may be encountered in benign papillary hyperplasia multinodular goiter, Hashimoto’s thyroiditis, and Graves’ disease. For this reason, appro...

Focal epithelial hyperplasia (FEH) or Heck’s disease is a rare viral infection of the oral mucosa caused by human papilloma virus especially subtypes 13 or 32. The frequency of this disease varies widely from one geographic region and ethnic groups to another. This paper reports an Iranian case of extensive focal epithelial hyperplasia. A 35-year-old man with FEH is described, in whom the lesio...