Dysplasia
Dysplasia (. Δυσ from ancient Greek ( dys ) ' miss- un- ' and πλάσσειν ( plassein ) ' shape, form ', Modern Greek: δυσπλασία ) referred to in human medicine and veterinary medicine a malformation.
Different yet reversible changes of cells, tissues and organs by atypical growth processes and loss of differentiation. The transitions are fluid to anaplasia.
When considering the histological structure of an organ is meant by the term dysplasia, a deviation from the normal structure of the tissue image. If dysplasia heaped on the microscopic examination findings ( histological examination ), this may be precancerous.
Moderate and severe dysplasia are classified as precancerous lesions ( precursors of malignant tumor).
Examples
- General malformations Bronchopulmonary dysplasia
- Dysplasia of the retina ( Reese syndrome)
- Fibromuscular dysplasia of vessels
- Polyostotica dysplasia fibrosa ( Jaffé - Lichtenstein syndrome)
- Ectodermal dysplasia
Dysplasia of skeletal and connective tissue
It is in the dysplasia of skeletal and connective tissue around system -like disturbances of bone and cartilage tissue. Thus, they are not directors, but tissue defects.
- Achondroplasia
- Campomele dysplasia
- Dysplasia oculo - auricular
- Enchondromatosis
- Fibrous dysplasia
- Hip dysplasia
- Kleidokraniale dysplasia
- Multiple epiphyseal dysplasia
- Multiple cartilaginous exostoses
- Neurofibromatosis ( von Recklinghausen 's disease)
- Osteogenesis imperfecta
- Osteopetrosis
- Pseudoachondroplasia
- Spondyloepiphyseal dysplasia
- Thanatophoric dysplasia
Special histological dysplasia as a precancerous
- Epithelial skin
- Dysplasia of skin pigment cells ( Dysplastic Nevus )
- Epithelial dysplasia of the gastric and esophageal mucosa
- Epithelial dysplasia of the bronchial mucosa
- Epithelial dysplasia of the cervix ( cervix uteri )
- Dysplasia of thyroid cells