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초록

Retention cysts are commonly found in the maxillary sinus and are discovered incidentally onimaging studies. Obstruction of the ducts of the seromucous glands of the paranasal sinus lin ing is thought to induce the development of retention cysts. Since retention cysts are asymp tomatic and tend to degenerate, they do not require definite treatment. However, in clinicalpractice, surgical treatment is often performed without clear indications. Retention cysts needto be surgically managed when accompanied with relevant clinical symptoms or with obstruc tion of the natural ostium, or when involving the ostiomeatal complex or the infraorbitalnerve. Endoscopic sinus surgery has become the surgical procedure of choice for removingretention cyst. Therefore, it is important for rhinologists to understand the nature and behaviorof this pathology so that unnecessary surgical intervention could be avoided.

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