Trichoepithelioma
Encyclopedia
Trichoepithelioma is a neoplasm of the adnexa
of the skin
.
One form has been mapped to chromosome
9p21.
Adnexa
In anatomy, adnexa refers to the appendages of an organ. The term adnexa stems from a Latin word meaning appendages.More specifically, it can refer to:* Adnexa of eye * Adnexa of uterus...
of the skin
Skin
-Dermis:The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. The dermis is tightly connected to the epidermis by a basement membrane. It also harbors many Mechanoreceptors that provide the sense of touch and heat...
.
One form has been mapped to chromosome
Chromosome
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.Chromosomes...
9p21.
Types
Trichoepitheliomas may be divided into the following types:- Multiple familial trichoepitheliomaMultiple familial trichoepitheliomaMultiple familial trichoepithelioma is a cutaneous condition characterized by multiple cystic and solid nodules appearing on the face.Types include:- References :...
- Solitary trichoepitheliomaSolitary trichoepitheliomaA solitary trichoepithelioma is a cutaneous condition characterized by a firm dermal papules or nodules most commonly occurring on the face....
- Desmoplastic trichoepitheliomaDesmoplastic trichoepitheliomaA desmoplastic trichoepithelioma is a cutaneous condition characterized by a solitary, firm skin lesion on the face.- Treatment :Desmoplastic trichoepithelioma is benign tumor and can be managed safely with surgical removal, electrodesiccation and curettage....