Aarskog-Scott syndrome: A syndrome of wide spaced eyes (ocular hypertelorism), front-facing (anteverted) nostrils, a broad upper lip, a malformed ("saddle-bag") scrotum, and laxity of the ligaments resulting in bending back of the knees (genu recurvatum), flat feet, and overly extensible fingers. There are X-linked and autosomal forms of the disease. The gene for the X-linked form has been mapped to chromosome band Xp11.21 and identified as the FGD1 gene.

The disease is named for DJ Aarskog (1928-) and CI Scott, Jr. (1934-), Norwegian and American pediatricians, who described it in 1970 and 1971. It is also known as Aarskog syndrome, faciodigitogenital dysplasia, and faciogenital dysplasia.

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Legionnaire disease: A disease due to the bacteria Legionella pneumophila found in plumbing, shower heads and water-storage tanks. Outbreaks of Legionella pneumonia have been attributed to evaporative condensers and cooling towers. The bacteria thrives in the mist sprayed from air-conditioning ducts and so it can infest an entire building or airplane. Travelers are especially vulnerable in the closed space within a plane.

Home hot water pipes have also been found to be a common source of the disease. The bacteria flourish at temperatures between 90 and 105 degrees and so can grow in the slimy gunk lining residential hot water pipes. People contract the bacteria by inhaling drops of water while showering, washing or even drinking.

Legionnaire disease can cause a massive pneumonia associated with collapse of the respiratory function. It can be an overwhelming and sometimes fatal illness.

The disease was first identified as a sequel of the 1976 convention of the American Legion in some of the Legionnaires who had attended the convention. It was therefore named Legionnaire disease. The distinguished surgeon/writer Richard Selzer has recounted his own near-fatal experience with Legionnaire disease in "Raising the Dead. A Doctor's Encounter with His Own Mortality" (Whittle/Viking, New York, 1993).

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Goiter: Enlargement of the thyroid gland.

A goiter is not cancerous. It is simply a thyroid gland that is bigger than usual.

A goiter can be associated with levels of thyroid hormone that are normal (euthyroid), too high (hyperthyroid) or too low (hypothyroid).

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Medical profession: A vocation characterized by a specialized body of knowledge of medicine that its members must teach and expand, by a code of ethics and a duty of service that put patient care above self-interest, and by the privilege of self-regulation granted by society.

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