Abstract
BackgroundMucoceles are slowly expanding cystic lesions with respiratory epithelium containing mucus most commonly affecting the frontal and ethmoidal sinuses. They are caused by obstruction of sinus ostium. Mucoceles exert pressure on the bony boundaries and due to the proximity to the brain and orbit extension to these areas are common.Case presentationA case of a frontal mucocele with an accompanying orbital abscess mimicking a fronto-orbital mucocele is reported. A 77 year old female patient suffering from left sided proptosis and pain around the left eye was admitted to our department. She had a history of left frontal sinus mucocele one year ago that was offered an osteoplastic frontal sinus surgery that the patient refused. Patient had limitation of eye movements. Fundoscopic examination revealed a minimal papilledema. Coronal computerized tomography and orbital magnetic resonance imaging showed a frontal mucocele with suspicious erosion of the orbital roof and a superiorly localized extraconal mass displacing the orbit lateroinferiorly. Frontal and orbital masses had similar intensities. Thus surgery was planned for a fronto-orbital mucocele. During surgery no defect was found on the orbital roof. Frontal mucocele and orbital cystic mass was removed separately. Pathological examination showed a frontal mucocele and an orbital abscess wall. Postoperatively eye movements returned to normal and papilledema resolved.ConclusionFronto-orbital mucoceles are commonly encountered pathologies, but frontal mucocele with an orbital abscess is a rarely seen and should be kept in mind because their treatments differ.
Highlights
Mucoceles are slowly expanding cystic lesions with respiratory epithelium containing mucus most commonly affecting the frontal and ethmoidal sinuses
A 77 year old female patient suffering from left sided proptosis and pain around the left eye was admitted to our department
She had a history of left frontal sinus mucocele one year ago that was offered an osteoplastic frontal sinus surgery that the patient refused
Summary
Paranasal mucoceles are slowly expanding cystic lesions with pseudostratified columnar epithelium in the setting of a background of chronic inflammation filled with inspissiated mucus exerting pressure on the normal boundaries of the sinus due to the obstruction of sinus ostium [1]. CastFhimiforgroroiulouanrnrgteahinl1tptmheaeunrcsabiontoaicensesyalelarcnoaodnomdfapoasufnutseihpnreetirzcoaetredobdrtitobaimrteaoal gcoryafspctihocymmdmaesumsnoihcnaasvttinroagnting Coronal paranasal computerized tomography demonstrating a frontal mucocele and an intra orbital cystic mass having similar intensities and a suspected area of communication through the bony roof of the orbit. CmFiougrcuornceeal2emaangdneatnicorrebsiotanlacnycseticimmagaisnsg demonstrating a frontal Coronal magnetic resonance imaging demonstrating a frontal mucocele and an orbital cystic mass. A 77 year old female patient suffering from left sided proptosis and pain around the left eye was admitted to our department She had a history of left frontal sinus mucocele one year ago that was offered an osteoplastic frontal sinus surgery that the patient refused. Coronal computerized tomography (Figure 1) and orbital magnetic resonance imaging (Figure 2, 3) showed a frontal mucocele with suspicious erosion of the orbital roof and a superiorly localized extraconal mass displacing the orbit lateroinferiorly. Frontal sinus and inflammation of the eye was resolving (Figure 6)
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