MORPHOLOGIC CHARACTERISTICS OF THE SINUSES

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Abstract
Nature has designed a program of development for the pneumatized spaces of the mastoids and the paranasal sinuses. Experiences suffered by these parts during the period of their formation are reflected in their growth and development. The history of the patient may reveal previous infections, but a study of the morphologic features of the sinuses will disclose their influence. The application of this knowledge is valuable in determining whether a present infection is entirely acute or whether it is an exacerbation of a chronic condition. HEREDITY Heredity is the greatest factor in determining the size and shape to which the sinuses are destined to develop. The sinuses of a child will assume the shape of those of the ancestor whom he resembles in facial appearance, provided neither has suffered an arrest of development of the sinuses. FRONTAL SINUS The frontal sinus readily lends itself to the study of its development

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