Mucocele of the nasal accessory sinuses, though not rare, is relatively uncommon and of clinical interest because of its varied features. In this report 2 cases will be described, 1 of which presents some noteworthy findings. Also, the more recent concept of the formation of a mucocele will be emphasized.
St. Clair Thomson and V. E. Negus defined a mucocele as "an accumulation of a mucous secretion within an accessory sinus with distention of one or more of its walls. This secretion may be loculated in one part of the sinus and may become purulent, when it is called a pyocele. It is generally associated with more or less obstruction in the outlet of the cavity, and it may be caused by blockage and cystic dilatation of a gland."1 The lesion occurs most often in the frontal and ethmoid sinuses, less frequently in the antrum and rarely in the sphenoid
WEISS JA. MUCOCELE OF THE FRONTAL SINUS. Arch Otolaryngol. 1940;32(6):1090–1097. doi:10.1001/archotol.1940.00660021098012
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