Table 1. Clinical presentation and siggested etiology of the patients.

F: female; M: male; FESS: functional endoscopic sinus surgery

Patient number	Gender/ age	Suggested etiology	Localization of mucocele	Clinical presentation and duration
1	M/67	FESS	Right frontal	Right eye ptosis, double vision, frontal headache, and epiphora for three years.
2	M/52	History of old nasal trauma, mucocele evacuation by FESS done twice	Left ethmoidal	Left eye proptosis, and epiphora for 10 years.
3	M/55	Unknown	Right frontal and ethmoidal	Right supraorbital swelling, pain, and headache for six days.
4	M/14	Unknown	Left frontal	Unknown.
5	M/45	History of same presentation and operated twice externally	Left frontal	Left nasal obstruction, left orbital swelling, and double vision for one year.
6	M/35	Unknown	Left frontal and ethmoidal	Left eye orbital swelling, double vision, poor smell sensation, nasal obstruction for two months.
7	F/39	History of nasal polyposis and four times FESS	Left frontal and ethmoidal	Left eye proptosis, double vision, frontal headache for two months.
8	F/44	Unknown	Left ethmoid	Left nasal duct obstruction, epiphora, left side nasal obstruction, left side facial headache for one year.