Giant frontal mucocele extending into the anterior cranial fossa

Kawaguchi, Shoichiro; Sakaki, Toshisuke; Okuno, Sachiko; Ida, Yuki; Nishi, Noriyuki

doi:10.1054/jocn.2001.0909

Cited by 20 publications

(14 citation statements)

References 13 publications

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“…This results from obstruction of the frontal recess which is an internal channel that drains the frontal sinuses into the middle meatus 3,11 . Frontal sinuses may erode through the surrounding bones and extend intraorbitally and intracranially or present as subcutaneous forehead mass [12][13][14][15][16] .…”

Section: Discussionmentioning

confidence: 99%

Frontoethmoidal Mucoceles: CT and MRI Evaluation

et al. 2007

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Paranasal sinus mucocele is an expanded, airless, mucus-filled sinus caused by obstruction of the sinus ostium. It is a benign slow growing epithelial lined lesion, bulging against adjacent anatomical structures, without infiltrating them. The purpose of our study is to describe the CT and MR findings in 19 patients (ten women, nine men, 18-72 years, mean age: 48.1) with surgically confirmed frontoethmoidal mucoceles between 1999-2005. CT scans displayed mucoceles as non enhancing soft tissue density lesions, generally isodense to the brain parenchyma, expanding the sinuses in most cases, eroding adjacent bones and extending intraorbitally or intracranially. Signal intensity in T2WI and T1WI MR images varied, but generally lesions had high signal intensity in T2WI and low to intermediate signal intensity in T1WI. Some of the lesions demonstrated regular linear peripheral enhancement after administration of contrast medium. The causes of mucoceles included mucosal thickening from chronic sinusitis, adhesions from previous operation in the nasal cavity, previous trauma, small nasal polyps and a small osteoma, while in six patients (31.5%) the cause of the mucocele remained unrecognized even after surgery. No underlying malignant tumor was found in any of the cases as the cause of obstruction. CT and MRI established the correct diagnosis in all patients. CT was more sensitive in determining bone erosions, while MRI had the advantage of multiplanar imaging and was much more sensitive for differentiating mucocele from a tumor on the basis of MR signal intensity characteristics. In conclusion, CT and MRI are the methods of choice for diagnosing mucoceles of the paranasal sinuses and are of major importance for the treatment plan. Each method seems to have its own advantages and should be used as complementary investigations of sinonasal pathology. Enhanced CT scan should only be performed in the absence or contraindication for enhanced MR imaging.

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Section: Discussionmentioning

confidence: 99%

Frontoethmoidal Mucoceles: CT and MRI Evaluation

et al. 2007

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“…A mucocele is a buildup of mucus secretions with cyst formation. In the paranasal sinuses, mucoceles occur due to occlusion of the nasofrontal duct caused by inflammation, fibrosis, trauma, congenital abnormality, or neoplasia 1–3 . Frontal sinus mucoceles are common in humans and are typically benign.…”

Section: Discussionmentioning

confidence: 99%

Imaging Diagnosis: Intracranial Mucocele in a Dog

Sessums

Lane

2008

Vet Radiology Ultrasound

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“…[1][2][3][4][5][6] Sinus inflammation, altered mucus production, and obstruction of the sinus ostium are considered causes of mucoceles. [1][2][3][4][5][6] Sinus inflammation, altered mucus production, and obstruction of the sinus ostium are considered causes of mucoceles.…”

Section: Discussionmentioning

confidence: 99%

“…2 This histological type is well described but uncommon. 4 Previous studies have reported a variety of different immunoperoxidase staining characteristics in lipomatous meningioma, and these are reviewed. 3 In the 2000 World Health Organization Classification of Tumors of the Nervous System, meningiomas with lipomatous changes are classified as metaplastic meningiomas, as are meningiomas with osseous, cartilaginous, myxoid, and xanthomatous changes.…”

Section: Introductionmentioning

confidence: 99%