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Epidermolytic hyperkeratosis (also known as "Bullous congenital ichthyosiform erythroderma," [7] "Bullous ichthyosiform erythroderma," [8]: 482 or "bullous congenital ichthyosiform erythroderma of Brocq" [9]) is a rare skin disease in the ichthyosis family, affecting around 1 in 250,000 people.
Hyperkeratinization (American English or hyperkeratinisation in British) is a disorder of the cells lining the inside of a hair follicle. It is the normal function of these cells to detach or slough off from the skin lining at normal intervals. The dead cells are then forced out of the follicle (primarily by the growing hair).
Keratinized squamous epithelium is present in the gingiva and hard palate as well as areas of the dorsal surface of the tongue. [8] [9] Keratinization is the differentiation of keratinocytes in the stratum granulosum into nonvital surface cells or squames to form
Diagnosis is mainly clinical, based on the history and clinical appearance. The differential diagnosis includes other oral white lesions such as Leukoplakia, squamous cell carcinoma, oral candidiasis, lichen planus, white sponge nevus and contact stomatitis. [7] In contrast to pseudomembraneous candidiasis, this white patch cannot be wiped off. [7]
Cells of stratum corneum are sometimes without keratin and living. Examples of non-keratinized stratified squamous epithelium include some parts of the lining of oral cavity , pharynx , conjunctiva of eye , upper one-third esophagus , rectum , vulva , and vagina .
A keratin pearl is a keratinized structure found in regions where abnormal squamous cells form concentric layers. Also called an epithelial pearl, due to a location among squamous cells of the epithelium , this type of structure is sometimes seen with squamous cell carcinoma .
Echoing France's Napoleon Bonaparte, U.S. President Donald Trump on Saturday took to social media to signal continued resistance to limits on his executive authority in the face of multiple legal ...
Non-keratinized squamous epithelium, including cornea and transitional epithelium [6] Cytokeratin 7: A subgroup of glandular epithelia and their tumors [6] Transitional epithelium and transitional carcinoma [6] Cytokeratin 8: Glandular epithelia of the digestive, respiratory and urogenital tracts, both endocrine and exocrine cells, as well as ...