Metaplasia is the replacement of one differentiated cell type with another mature differentiated cell type that is not normally present in that tissue. Metaplasia, when persistent, can be a precursor ...

Avascular necrosis is a type of osteonecrosis resulting from a disruption in blood supply to the proximal femur and is a major complication associated with developmental hip dysplasia.

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Cervical dysplasia is the presence of abnormal cells in the cervix. Cases are classified as mild, moderate or severe depending on the extent of abnormal cell growth. Although the precise cause of ...

Clinical oral exams (COEs) have a poor overall performance as diagnostic methods for predicting dysplasia and oral squamous cell carcinoma (OSCC), according to a new study in the Journal of the ...

Hiebert, J. Mark — Formerly, House Officer, Children's Medical Service, Massachusetts General Hospital. Garland, Joseph — Physician to Children's Medical Service, Massachusetts General Hospital. For ...

We have characterized a mutation in the type II collagen gene (COL2A1) that produces a form of spondyloepiphyseal dysplasia. The mutation is an internal tandem duplication of 45 base pairs within exon ...

Aplasia is a condition in which an organ, limb, or other body part does not develop. In most cases, aplasia is obvious at birth. However, certain types of aplasia may sometimes not be apparent until ...