Cyclic changes in conjunctival smears from menstruating females.

Cytohormonal evaluation has become an accurate procedure for the assessment of estrogenic effect on the vaginal and buccal mucosa. Both show a cyclical variation in the maturation index (an "estrogenic value" based on epithelial maturation). Conjunctival smears were taken from the temporal conjunctiva of 11 premenopausal and 7 postmenopausal females on a near-daily basis.

Ultrastructural study of the histogenesis of salivary gland mucoepidermoid carcinoma.

This electronmicroscope study of the histogenesis of mucoepidermoid carcinoma is based on 15 cases from the major and minor salivary glands. Six major cell types were identified: undifferentiated (cuboid) stem cells, intermediate (columnar) cells, serous/mucoid secretory cells, mucus-producing goblet cells, squamous/epidermoid cells and myoepithelium. It is proposed that undifferentiated stem cells serve as pluripotential reserves which give rise to the various cell types seen in mucoepidermoid carcinoma.

Ceruminoma revisited.

Ceruminoma is a catch-all term that has caused much confusion both in the literature and in clinical practice in regard to the specific histologic diagnosis and proper treatment for tumors arising from the ceruminous glands of the external ear canal. The term ceruminoma has been used in the past to refer to both benign and malignant lesions. To clarify the terminology and better determine appropriate treatment, two cases of benign adenoma of the ceruminous glands along with their histopathologic findings will be presented.