plattenepitheliale

Plattenepitheliale is an adjective used in histology and pathology to describe tissue related to Plattenepithel, or squamous epithelium. Squamous epithelium consists of flat, scale-like cells that can form either a single layer (simple squamous epithelium) or multiple layers (stratified squamous epithelium), depending on location and function. The stratified form provides protection against abrasion, while the simple form lines surfaces where diffusion or filtration is needed.

Keratinized stratified squamous epithelium is found in the epidermis of the skin, where keratin strengthens the outer layer. Non-keratinized stratified squamous epithelium lines moist surfaces such as the oral cavity, esophagus, vagina, and cervix, providing protection without a keratin layer. Simple squamous epithelium lines surfaces where a thin barrier is required, including the endothelium of blood vessels and lymphatics, as well as the alveolar lining of the lungs and the serous membranes (pleura, pericardium, peritoneum).

Clinically, tissues described as plattenepitheliale can undergo characteristic changes. Squamous metaplasia refers to a transformation from another epithelial type to a squamous type, typically in response to chronic irritation. Squamous cell carcinoma is a malignant neoplasm arising from squamous epithelium and can occur in the skin, upper aerodigestive tract, and other sites.

In German medical usage, plattenepitheliale describes properties, tissues, or processes related to squamous epithelium.