OSTEOMA OF THE FRONTAL SINUS
L. A. PARSELL
Abstract
L. A. PARSELL
Abstract
In a survey of the literature inclusive of 1926, Harris1reported a total of 117 cases of osteoma of the frontal sinus. I have counted 20 additional cases of osteoma distributed as follows: frontal sinus, 8 cases; orbit, 4 cases; ethmoid, 3 cases; sphenoid, 2 cases, and frontal, ethmoid and orbit, 3 cases. Osteomas appear to arise from the periosteum lining the sinus. It is doubtful whether trauma plays a rôle. However, there are many instances in which the history of an injury is definite. Chronic inflammation of the sinuses has been suggested as a cause. Osteomas are usually composed of a dense, ivory-like periphery and a soft cancellous center and are attached to the wall by a pedicle. There are three types: (1) eburnated, (2) spongiose and (3) mixed. Structurally, they differ from the usual bone in that the haversian canals and lacunae do not conform to any
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In a survey of the literature inclusive of 1926, Harris1reported a total of 117 cases of osteoma of the frontal sinus. I have counted 20 additional cases of osteoma distributed as follows: frontal sinus, 8 cases; orbit, 4 cases; ethmoid, 3 cases; sphenoid, 2 cases, and frontal, ethmoid and orbit, 3 cases. Osteomas appear to arise from the periosteum lining the sinus. It is doubtful whether trauma plays a rôle. However, there are many instances in which the history of an injury is definite. Chronic inflammation of the sinuses has been suggested as a cause. Osteomas are usually composed of a dense, ivory-like periphery and a soft cancellous center and are attached to the wall by a pedicle. There are three types: (1) eburnated, (2) spongiose and (3) mixed. Structurally, they differ from the usual bone in that the haversian canals and lacunae do not conform to any
Key concepts: Osteoma, Frontal sinus, Periosteum, Sinus (botany), Anatomy, Orbit (dynamics), Medicine, Skull