Outcome after human papillomavirus (HPV) infection of stratified squamous
epithelium of the cervix.
The epithelial cells lined cysts in layers of keratinizing stratified squamous
epithelium and formed small irregular islands and nests around the periphery of cysts, occasionally embedded within neuroectodermal tissue.
The cyst wall was lined with a stratified squamous
epithelium and contained mature sebaceous glands.
Microscopic examination showing mature components of smooth muscle, mature adipocytes, seromucinous salivary gland, salivary duct, exocrine pancreas, cartilage, and bone (a), Keratinizing stratified squamous
epithelium, hair follicle, and sebacaeous gland (b), Bronchial epithelium (c)
A histological feature seen in the dentigerous cyst lining is usually a fibrous wall with two- to four-layer thickness of non-keratinized stratified squamous
epithelial lining, and itconsists of the myxoid tissue, odontogenic remnants, and occasionally, the connective tissue wall resembles dental papillae and shows mild chronic inflammatory cell infiltrate with mild vascularity and areas of hemorrhage (13).
Histologically, dentigerous cysts are lined by a layer of a nonkeratinized stratified squamous
epithelium, with a surrounding wall of thin connective tissue.
In the presence of adequate endogenous estrogen (principally estradiol), the vaginal wall is a thickly stratified squamous
epithelium with a rugated surface that is rather elastic.
Histopathology revealed a cystic structure composed of stratified squamous
and columnar epithelium, with no lymphatic elements or oncocytic changes, compatible with a diagnosis of a ductal cyst.
Regarding histopathology, the lesions in each patient were composed of stratified squamous
epithelium with parakeratosis covering bundles of striated muscles, without the normal skin appendages.
Histopathologic examination following excision revealed overlying parakeratinized stratified squamous
epithelium at either end with ulceration and discontinuity at the centre (Figures 7(a) and 7(b)).
An incisional biopsy was performed, and intraoperative frozen section revealed a "stratified squamous
epithelium, fat, and skeletal muscle lesion--in keeping with a teratoma." The tumor was gradually debulked and removed endoscopically with a microdebrider (Skimmer[R]) (Figure 2(b)).
Gross examination of the specimen showed an oblong skin-covered tubular mass measuring about 3 cm, while histological examination showed the stratified squamous
epithelium, overlying collagenized dermis containing adnexal structures, and admixture of fat lobules and collagen bundles (Figure 3).