Primary orbital schwannomas.

Rootman, Jack; Goldberg, Caroline J.; Wd, Robertson

doi:10.1136/bjo.66.3.194

Cited by 134 publications

(79 citation statements)

References 5 publications

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“…The previous result was similar finding with our result [12,[17][18][19]. Schwannoma is a rare orbital tumor that from Schwann cell in the peripheral nervous system [20][21][22]. The orbital schwannoma commonly origin from sensory branch of the ophthalmic division of the trigeminal nerve.…”

Section: Orbital Hemangiomasupporting

confidence: 81%

Valuation of Four-Quadrant Location Method in Diagnosis and Differential Diagnosis of the Orbital Tumor by Comparison Study Combining CT and MRI with Pathology

Akter¹,

Hasan²,

Sana³

et al. 2017

J Pain Relief

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Purpose: To valuate four-quadrant location method in diagnosis and differential diagnosis of the orbital tumor by comparison study combining CT and MRI with pathology. Materials and methods:Data of 87 patients (44 female and 43 males), aged 1 to 84 years were recruited in this study, including the computed tomography(CT), Magnetic resonance imaging (MRI), and histopathology diagnosis. All orbital tumors were verified radiologically and pathologically in the Hospital of Jinggangshan University from Sep-2008 to April-2016 patients underwent CT scanning (31 Conventional CT and 18 dynamic contrast enhancements CT) and 38 patients underwent MR Imaging (35 dynamic contrast enhancement MRI and 3 conventional MRI). The clinical data were retrieved from the medical record. We classified the orbital region according to four-quadrant and eight-space (FQES) division and traditional muscleconal division with center point of optic nerve. Results:Among the 87 cases of the orbital tumors, 70 cases (80.45%) were orbital benign tumors and 17 cases (19.54%) were malignant tumors. Regarding the location of the orbit, 41 lesions (47.12%) were in superolateral, 18 lesions (20.68%) were in inferolateral, 16 lesions (18.39%) were in inferomedial, 8 lesions (9.19%) were in superomedial, 3 lesions (3.44%) were in globe, 1 lesion (1.14%) was in optic nerve. The most common tumors are hemangiomas (total 36 cases: 12 in inferolateral, 8 in inferomedial, 9 in superolateral, 7 in superomedial) and 9 cases of pleomorphic adenoma were in superolateral, 9 cases of dermoid cyst ( 7 in superolateral and in 2 inferomedial), 5 cases of inflammatory pseudotumor (4 in superolateral and 1 in inferomedial), 7 cases of lymphoma (3 in superolateral, 2 in inferolateral and 2 in inferomedial ), 3 cases of adenoid cystic carcinoma in superolateral, 3 caese solitary fibrous tumor ( 2 in suprolateral and 1 in inferomedial), 3 cases lipoma (1 in superomedial, 1 in superolateral and 1 in inferolateral), 2 cases choroidal melanoma were in globe, 1 case of metastasis in superolateral, 1 case of meningioma in optic nerve, 1 case of malignant melanoma was in superolateral. The orbital tumors appeared in orbit with mostly regular, oval and rounds shape, well defined margin. The size ranged from 0.8 mm × 4.5 cm to 4.5 cm × 2.0 cm. The CT revealed iso-density in 22, slightly high-density in 15, mixed density in 6, low density in 5 and high density in 1 lesion. Among them, 18 were contrast enhancements. On T1WI image, the MRI revealed low signal intensity in 23 cases, slightly low signal in 4 cases, iso signal intensity in 7 case, high signal intensity in 3 cases, mixed signal intensity in 1 case on T2WI, it revealed high signal intensity in 23 cases, slightly high intensity in 7 cases, low signal intensity in 4 cases, iso signal intensity in 3 cases, mixed signal intensity in 1 case. Among them, 35 contrast enhancement MRI and 3 were non contrast MRI. Benign tumor was diagnosed in 70 patients, of them 34 were male and 36 were female, and the mean age was 45.19 ...

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Section: Orbital Hemangiomasupporting

confidence: 81%

Valuation of Four-Quadrant Location Method in Diagnosis and Differential Diagnosis of the Orbital Tumor by Comparison Study Combining CT and MRI with Pathology

Akter¹,

Hasan²,

Sana³

et al. 2017

J Pain Relief

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“…Surgical friability can complicate tumour excision and, although not common, has been described. 1,5,11 In this case, the previous biopsy, which disrupted the capsule, may have resulted in operative friability of the tumour. Local recurrences may occur many years later, but malignant transformation is extremely rare.…”

Section: Commentmentioning

confidence: 91%

“…2,8 Cyst formation within the tumour is characteristic. 1,2,9,10 The differential diagnosis includes other slow-growing tumours including cavernous haemangioma, meningioma, and haemangiopericytoma, 1,2,5 all of which show greater contrast enhancement radiologically than schwannomas 5,8 in general.…”

Section: Commentmentioning

confidence: 99%

“…[2][3][4] Typically, they arise from the first division of the trigeminal nerve (supraorbital and supratrochlear branches). 1,2,5 A typical presentation may occur as a single cystic lesion in the orbit 6 or as a schwannoma arising from the optic nerve itself. 7 We present a case of a primary orbital schwannoma with accelerated growth during pregnancy, which was positive for progesterone receptors.…”

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confidence: 99%

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Accelerated growth of a primary orbital schwannoma during pregnancy

Chang

Moriarty

Cunniffe

et al. 2003

Eye

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“…The variable origin and location of this tumor causes combination of signs and symptoms in the patients. [8] Paresthesia or numbness in more than one division of the nerve are common complaints of patients rather than severe neuralgic pain. Wasting of the temporalis and pterygoid muscles are usually diagnostic for the disorder.…”

Section: Case Reportmentioning

confidence: 99%

A Rare Case of Schwannoma of Trigeminal Nerve With Intraorbital Extension

Patil¹,

Ananth²,

Sultana³

2015

jemds

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Schwannomas, also known as neurilemmomas, are benign peripheral nerve sheath tumors. Trigeminal schwannomas are rare intracranial tumors. Here, we report a 35-year-old female presenting with an axial proptosis of right eyeball with right-sided III, IV and VI cranial nerve palsy. Her best corrected visual acuity in the right eye was perception of light absent and in the left eye was 20/20. MRI scan revealed a large right-sided heterogeneous, extra-axial middle cranial fossa mass that extended to the intraconal space of right orbit. A diagnosis of intracranial trigeminal nerve schwannoma with right orbital extension was made. Successful surgical excision of the mass with preservation of the surrounding tissues and orbital exenteration was done. Post-operative period was uneventful.INTRODUCTION: We present a rare case of schwnnoma of the right trigeminal nerve (V1 segment) of 40 year female patient presented with pain and watering in the right eye redness and forward proptosis. CT brain reveals intraconal mixed density lesion with solid cystic component causing proptosis and widening of optic canal extending to middle cranial fossa possibly optic nerve glioma. MRI of brain reveals intensely heterogeneously enhancing orbital neoplasm with intra and extra conal component with areas of haemorrhage and necrosis. The lesion seen to encase right cavernous sinus and right internal carotid artery and displacing the cavernous sinus medially and pituitary laterally possibly optic nerve sheath tumour -schwannoma or optic nerve glioma. However HPR reveals schwannoma of the V1segment of right trigeminal nerve.Schwannomas are usually benign (WHO GRADE I) tumors arising from the schwann cells in the axon myelin sheaths. [1] Trigeminal schwannomas are rare intracranial tumors, accounting for 0.8% to 8% of intracranial schwannomas. Trigeminal schwannomas are much less common than acoustic neuroma. [2] This benign tumor grow larger and spread into extracranial compartments through the foramina in the skull. [3] The variable location and presentation of this tumor makes the diagnosis difficult. The diagnosis is usually confirmed by histopathological examination. Here we present a rare case of benign intracranial trigeminal schwannoma arising from right parasellar region extending to intraconal space of the right orbit which was managed successfully by surgery.

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Primary orbital schwannomas.

Cited by 134 publications

References 5 publications

Valuation of Four-Quadrant Location Method in Diagnosis and Differential Diagnosis of the Orbital Tumor by Comparison Study Combining CT and MRI with Pathology

Valuation of Four-Quadrant Location Method in Diagnosis and Differential Diagnosis of the Orbital Tumor by Comparison Study Combining CT and MRI with Pathology

Accelerated growth of a primary orbital schwannoma during pregnancy

A Rare Case of Schwannoma of Trigeminal Nerve With Intraorbital Extension

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