They form either by the result of developmental anomalies or trauma.

It is a genetic disorder that can lead to severe developmental anomalies.

Grelier stopped at an adult male that had begun to show developmental anomalies during his last examination.

These lesions are thought to represent developmental anomalies of normal venous drainage.

Some Hindus support abortion in cases where the mother's life is at imminent risk or when the fetus has a life threatening developmental anomaly.

Anatomy, histology, embryology, and developmental anomalies of the stomach and duodenum.

Sturge-Weber is an embryonal developmental anomaly resulting from errors in mesodermal and ectodermal development.

Abnormal expression of several T-box genes has been shown to cause developmental anomalies in mouse, Drosophila or zebrafish.

An accessory auricle is considered a developmental anomaly resulting from the persistence of a structure which variably recapitulates the normal external ear.

Enteric nervous system section of Anatomy, histology, embryology, and developmental anomalies of the small and large intestine.

This is a lethal condition in which the primary feature is agnathia - a developmental anomaly characterized by total or virtual absence of the lower jaw.

Aniridia, a developmental anomaly of the iris, disrupts the normal barrier of the cornea to the conjunctival epithelial cells at the limbus.

Fanconi anemia is an autosomal recessive disorder with diverse clinical symptoms, including developmental anomalies, bone marrow failure, and early occurrence of malignancies.

The relative lack of maternal illness, abortions, and fetal developmental anomalies differentiates PPV from most other infectious causes of reproductive failure.

Posterior urethral valve (PUV) disorder is an obstructive developmental anomaly in the urethra and genitourinary system of male newborns.

Micropolygyria also known as polygyria or microgyria is a Neuronal migration disorder, a developmental anomaly of the brain characterized by development of numerous small convolutions (microgyri), causing mental retardation.

Persistent hyperplastic primary vitreous (PHPV) is a rare congenital developmental anomaly of the eye that results following failure of the embryological, primary vitreous and hyaloid vasculature to regress.

The vanished twin can die owing to a poorly implanted placenta, a developmental anomaly that may cause major organs to fail or to be missing completely, or there may be a chromosome abnormality incompatible with life.

Cebocephaly [Greek kebos, monkey + kephale, head] is a developmental anomaly of the head characterized by a monkey-like head, with a defective small, flattened nose with a single nostril or absent nose and closely set eyes.

Myeloschisis (my elos chi sis) is a developmental anomaly characterized by a cleft spinal cord, owing to failure of the neural plate to form a complete neural tube or to rupture of the neural tube after closure.

If gilts but not sows are affected, maternal illness is not seen during gestation, there are few or no abortions or fetal developmental anomalies, and other evidence suggests an infectious disease, then a tentative diagnosis of PPV-induced reproductive failure can be made.