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 11,717 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Symptomatic maxillary sinus cysts are diagnosed less frequently than similar cysts of the frontal and ethmoidal sinuses and are rarely reported in the ophthalmic literature. Patients with cysts of the maxillary sinus may present to the ophthalmologist with proptosis, enophthalmos, diplopia, ptosis, epiphora, and, rarely, decreased visual acuity. Four patients with maxillary sinus mucoceles are presented; one of these patients had a concurrent retention cyst in the orbit. Clinical history, radiologic findings, and histopathologic mechanisms are discussed. Mucocele is a recognized complication of the Caldwell-Luc procedure and midface trauma. Blockage of the sinus ostia was the cause previously proposed to explain antral mucocele development. Clinical and histopathologic features may support more than one single mechanism for the pathogenesis of maxillary sinus cysts. Maxillary sinus mucocele or retention cysts should be considered in the differential diagnosis of exophthalmos or enophthalmos following blowout fracture of the orbital floor.
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PMID:Destructive cysts of the maxillary sinus affecting the orbit. 317 50

Mucoceles involving any of the paranasal sinuses may present with ophthalmic disturbances. Maxillary antral mucoceles can encroach on the inferior orbit with ocular displacement and compression, proptosis or enophthalmos, lower lid distortion, tethering of extraocular muscles, and ptosis. Periocular pain, erosion of the inferior orbital rim, infraorbital nerve compression, epiphora, and inner canthal swellings are other important presentations. Postoperative mucoceles may involve only a portion of the antrum. Five illustrative cases are presented.
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PMID:Ophthalmic manifestations of maxillary sinus mucoceles. 365 61

Mucoceles are benign, slow-growing lesions defined as mucus-filled pseudocystic formations. Paranasal mucoceles predominantly affect the frontal sinus (60% to 65%), followed in frequency by the ethmoidal (20% to 30%), maxillary (10%), and sphenoid (2% to 3%) sinuses. Mucoceles usually arise because of sinus ostium obstruction, preceded by infection, fibrosis, inflammation, trauma, surgery or tumors such as osteomas. Mucoceles arising from the frontal sinus present with a variety of clinical signs, including decreased visual acuity, visual field abnormalities, proptosis, ptosis, periorbital swelling, displacement of the globe, restricted ocular movements, and choroidal folds. We describe a case of orbital involvement from a mucocele of the frontal sinus 30 years after the initial trauma, with a review of the published data concerning the etiology, diagnosis, and treatment planning.
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PMID:Osteoplasty flap technique for repair of latent (30-year) post-traumatic frontal sinus mucocele: case report and review of the literature. 2254 31

Mucoceles of the paranasal sinuses are benign, chronic, expanding lesions that characteristically develop because of obstruction of the sinus ostium. The frontal sinus is the most common sinus to be affected by a mucocele, which usually results from trauma or inflammatory processes. Patients with these lesions frequently present with visual complaints of decreased visual acuity, visual field abnormalities, proptosis, ptosis, displacement of the globe, or restricted ocular movements secondary to erosion through the thin bone of the superior orbit and compression on the globe. Often, intracranial extension of frontal sinus mucoceles is also present from erosion through the posterior table of the frontal sinus. Very rarely, they will present as a subcutaneous forehead mass or swelling. To the best of our knowledge, only 5 cases of a frontal sinus mucocele presenting as a forehead subcutaneous mass has been previously reported. We report the case of an 80-year-old woman with a history of remote forehead trauma who presented with a frontal sinus mucopyocele manifesting as a subcutaneous forehead mass eroding through the skin.
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PMID:Frontal Sinus Mucopyocele Presenting as a Subcutaneous Forehead Mass. 2604

Mucoceles are chronic, expanding, mucosa lined pathology of the paranasal sinuses. Frontal mucocele usually presents with the visual complaints such as diplopia, diminution of vision, visual field defect, ptosis, orbital swelling, retro-orbital pain, displacement of eye globe, and proptosis. Very rarely, it can be present as a subcutaneous swelling. This article presents a 58-year-old male patient presenting with an asymptomatic periorbital swelling and a painless forehead mass of 3 years duration. There was a partial ptosis, and an elongated, soft, subcutaneous mass over the forehead. Surgical excision of the mass confirmed the diagnosis of a mucocele. Postoperatively, the patient was asymptomatic. A subcutaneous soft-tissue mass may be the presenting complaint of a frontal mucocele. Careful examination of the surrounding skin may suggest the diagnosis of sinus-related disease and thus direct appropriate investigations.
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PMID:Frontal Mucocele Mimicking a Frontal Subcutaneous Tumor. 2911 5

Mucoceles are benign mucus-containing cysts formed due to the obliteration of sinus ostium. They are most commonly found in the frontal sinus. Mucoceles can spread both intraorbitally and intracranially causing complications such as meningitis, brain abscess, and loss of vision. Radiological investigations are required for diagnosis, with both computed tomography (CT) and magnetic resonance imaging (MRI) being useful. Surgical approaches for management have changed from external to endonasal these days. We report a case where a 54-year-old patient presented to us with a 14 days' history of loss of vision and complete closure of eyes over 2 days. Contrast-enhanced CT scan and MRI confirmed the diagnosis of frontoethmoidal mucocele breaching the left frontal sinus floor. Endoscopic orbital decompression with functional endoscopic sinus surgery was done. Eye movements and ptosis recovered completely after the surgery, but the vision did not. Although the etiology of mucocele is multifactorial, obstruction of sinus ostium is the most plausible cause. Increasing pressure on adjacent structures by the expanding mucocele can cause intraorbital and intracranial complications. MRI is superior to CT in differentiating mucocele from soft-tissue neoplasms, although CT gives a more detailed information on bone structure. Endoscopic approaches have become the most preferred way to access frontoethmoidal mucoceles, with external approaches being reserved for mucoceles in certain inaccessible locations. Timely intervention is imperative to prevent undesirable complications.
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PMID:Frontoethmoidal mucocele causing proptosis and visual loss. 3304 90