S: (n) acromphalus (abnormal protrusion of the navel; sometimes the start of umbilical hernia)
S: (n) amastia (absence of the mammary glands (either through surgery or developmental defect))
S: (n) aneuploidy (an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete))
S: (n) deviated septum (abnormal displacement of any wall that separates two chambers (usually in the nasal cavity))
S: (n) dextrocardia (abnormal condition where the heart is located toward the right side of the chest)
S: (n) ectrodactyly (congenital abnormality involving the absence of some fingers or toes)
S: (n) erethism (an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part)
S: (n) fetal distress, foetal distress (an abnormal condition of a fetus; usually discovered during pregnancy and characterized by an abnormal heart rhythm)
S: (n) inversion (abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth))
S: (n) pneumothorax (abnormal presence of air in the pleural cavity resulting in the collapse of the lung; may be spontaneous (due to injury to the chest) or induced (as a treatment for tuberculosis))
S: (n) hydatid mole, hydatidiform mole, molar pregnancy (an abnormality during pregnancy; chorionic villi around the fetus degenerate and form clusters of fluid-filled sacs; usually associated with the death of the fetus)
S: (n) hydramnios (an abnormality of pregnancy; accumulation of excess amniotic fluid)
S: (n) hypervitaminosis (an abnormal condition resulting from taking vitamins excessively; can be serious for vitamins A or D or K)
S: (n) hypospadias (an abnormal condition in males in which the urethra opens on the under surface of the penis)
S: (n) lagophthalmos (abnormal condition in which an eye cannot close completely)
S: (n) nanophthalmos (condition in which both eyes are abnormally small but otherwise normal)
S: (n) palmature (an abnormality in which the fingers are webbed)
S: (n) dysplasia (abnormal development (of organs or cells) or an abnormal structure resulting from such growth)
S: (n) hydrocephalus, hydrocephaly (an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological)
S: (n) gynecomastia (excessive development of the breasts in males; usually the result of hormonal imbalance or treatment with certain drugs (including some antihypertensives))
S: (n) infantilism (an abnormal condition in which an older child or adult retains infantile characteristics)
S: (n) macrocephaly, megacephaly, megalocephaly (an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical)