Hip dysplasia is an abnormal formation of the hip joint.

Hamartomas result from an abnormal formation of normal tissue, although the underlying reasons for the abnormality are not fully understood.

Not a cancer, nor any abnormal formation of artery, but a kernel of unnatural blackness.

The abnormal formation of the brain may be associated with seizures, developmental delay, and mental dysfunctions.

This abnormal formation of bone may restrict the movement of affected joints and/or hinder the growth of affected limbs.

A vascular ring is a congenital defect in which there is an abnormal formation of the aorta and/or its surrounding blood vessels.

Double aortic arch is an abnormal formation of the aorta, the large artery that carries blood from the heart to the rest of the body.

These defects cause an abnormal formation called a vascular ring - a circle of blood vessels.

The name comes from the babies' distinctive cry, caused by abnormal formation of the larynx.

Amelogenesis imperfecta presents with abnormal formation of the enamel or external layer of teeth.