| developmental anomaly | An anomaly established during intrauterine life; a congenital anomaly. (05 Mar 2000) |
|---|---|
| ebstein anomaly | <radiology> Tricuspid valve: abnormal formation and insertion, usually tricuspid insufficiency, right atrial enlargement (if severe, box-like heart), decreased pulmonary vascularity, cyanosis, severe at birth, mild in later childhood, angio: to-and-fro motion of contrast between RA and atrialised RV (12 Dec 1998) |
| ebstein's anomaly | Congenital downward displacement of the tricuspid valve with the septal and posterior leaflets being attached to the wall of the right ventricle. (12 Dec 1998) |
| epithelial reticular cell | One of the many-branched epithelial cell's that collectively form the supporting stroma for lymphocytes in the thymus; believed to produce thymosin and other factors that control thymic function. (05 Mar 2000) |
| eugnathic anomaly | An abnormality that is limited to the teeth and their immediate alveolar supports. Synonym: eugnathic anomaly. Origin: eu-+ G. Gnathos, jaw (05 Mar 2000) |
| Uhl anomaly | Right ventricular myocardial aplasia, causing a dilated, thin-walled right ventricle without murmurs; death results in early childhood. (05 Mar 2000) |
| lateral reticular nucleus | A group of cells in the medulla oblongata, located between the inferior olive and the descending trigeminal nucleus, receiving fibres from the spinal cord and motor cortex and projecting to the cerebellum. Synonym: nucleus lateralis medullae oblongatae, lateral reticular nucleus. (05 Mar 2000) |
| Freund's anomaly | A narrowing of the upper aperture of the thorax by shortening of the first rib and its cartilage; formerly believed to predispose to tuberculosis because of defective expansion of the lung apex. (05 Mar 2000) |
| giant pigmented nevus | These large pigmented (often hairy) congenital nevi are important because of their increased risk (10 to 15%) of conversion into malignant melanoma. A biopsy can confirm if cells have turned malignant. Any change in a pre-existing nevus should prompt a physician evaluation. (27 Sep 1997) |
| villonodular pigmented tenosynovitis | A condition resembling pigmented villonodular synovitis but arising in periarticular soft tissue rather than in joint synovia; occurs most commonly in the hands. Synonym: villonodular pigmented tenosynovitis. (05 Mar 2000) |
| retinal pigmented epithelial cell | See: pigmented retinal epithelium, retina. (18 Nov 1997) |
| pigmented | <biology> Coloured; specifically, filled or imbued with pigment; as, pigmented epithelial cells; pigmented granules. Source: Websters Dictionary (01 Mar 1998) |
| pigmented ameloblastoma | A benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life. It presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, it is characterised by small round undifferentiated tumour cells interspersed with larger polyhedral melanin-producing cells arranged in an alveolar configuration. Synonym: melanoameloblastoma, pigmented ameloblastoma, pigmented epulis, progonoma of jaw, retinal anlage tumour. (05 Mar 2000) |
| pigmented dermatofibrosarcoma protuberans | An uncommon variant of dermatofibrosarcoma protuberans containing heavily pigmented dendritic melanocytes scattered between spindle cells of the tumour. Synonym: Bednar tumour, storiform neurofibroma. (05 Mar 2000) |
| pigmented epulis | A benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life. It presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, it is characterised by small round undifferentiated tumour cells interspersed with larger polyhedral melanin-producing cells arranged in an alveolar configuration. Synonym: melanoameloblastoma, pigmented ameloblastoma, pigmented epulis, progonoma of jaw, retinal anlage tumour. (05 Mar 2000) |