Intraosseous schwannoma of the occipital bone: a case report

Mathieu, François; Abel, Taylor J.; Hazrati, Lili‐Naz; Rutka, James T.

doi:10.1007/s00381-018-3820-z

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…2,8 Table 1 provides a summary of the limited literature on intraosseous schwannoma of the skull. Except for petrous apex lesions (in which 78% of cases presented with hearing/auditory disturbance) 7,[9][10][11][12][13][14] and one case of a clival lesion causing cranial nerve IX/X/XI disturbance, 15 symptoms appear nonspecific for lesions elsewhere with the most reported being a painless mass (55%), 3,4,[16][17][18] followed by headache (18%), 1 ocular symptoms (9%), 19 paraesthesia (9%), 1 or asymptomatic (9%). 20 Optimal treatment of intraosseous schwannoma has not been established, though surgical resection appears the mainstay of therapy, being utilised in 89% of existing cases, 1,3,4,7,[9][10][11]13,[15][16][17][18][19][20] and all cases of frontal bone lesions.…”

Section: Discussion and Literature Reviewmentioning

confidence: 99%

Intraosseous Schwannoma of the Frontal Bone: A Case Report and Review of the Literature

Chelepy,

Yousif,

Nichols

2023

IMCRJ

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Intraosseous schwannoma is a rare diagnosis, particularly so in the skull. Accordingly, little data exists to unify common features of this disease. Here, we present the fourth known case of a primary intraosseous schwannoma of the frontal bone: a 46-yearold male with severe, progressive headache and an osteolytic frontal bone lesion. Gross total resection of the lesion was performed with excellent clinical outcome. Histological analysis confirmed the diagnosis. The limited existing literature on this topic was reviewed to identify emerging trends surrounding presenting symptoms and treatment. Early literature suggests symptoms are often nonspecific, except for lesions of the petrous apex. No cases of recurrence have been demonstrated after gross total resection, though incomplete resection has been associated with recurrence. This diagnosis appears to be becoming a more often-considered differential for osteolytic, expansile skull lesions.

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Section: Discussion and Literature Reviewmentioning

confidence: 99%

Intraosseous Schwannoma of the Frontal Bone: A Case Report and Review of the Literature

Chelepy,

Yousif,

Nichols

2023

IMCRJ

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“…[ 7 , 22 ] Seventeen cases of intraosseous schwannomas of the skull have been previously reported [ Table 1 ]. The sites affected by the tumor were the petrous bone in eight cases,[ 8 , 11 , 20 , 23 , 25 , 29 , 30 ] frontal bone in three,[ 1 , 4 , 9 ] occipital bone in two,[ 4 , 17 ] parietal bone in one,[ 7 ] frontoparietal bone in one,[ 14 ] fronto-orbital bone in one,[ 26 ] and spheno-orbital bone in one. [ 6 ] To the best of our knowledge, schwannomas involving the clivus have not yet been reported.…”

Section: Discussionunclassified

“…e sites affected by the tumor were Video 1: Transmaxillary-pterygoid approach combined with translacerum approach. the petrous bone in eight cases, [8,11,20,23,25,29,30] frontal bone in three, [1,4,9] occipital bone in two, [4,17] parietal bone in one, [7] frontoparietal bone in one, [14] fronto-orbital bone in one, [26] and spheno-orbital bone in one. [6] To the best of our knowledge, schwannomas involving the clivus have not yet been reported.…”

Section: Origin Of the Tumormentioning

confidence: 99%

Intraosseous schwannoma in the clivus mimicking chordoma treated with endoscopic endonasal surgery: A case report

Ishikawa

Akutsu

Hara

et al. 2022

Surgical Neurology International

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Background: Intraosseous schwannomas are extremely rare and they have not yet been reported to occur in the clivus. We report a schwannoma in the clivus mimicking chordoma and review intraosseous schwannomas of the skull. Case Description: A 62-year-old man presented with gradually worsening hoarseness with dysphagia and atrophy of the left tongue, trapezius muscle, and sternocleidomastoid muscle. Magnetic resonance imaging showed that the tumor was mainly located in the clivus, and a computed tomography (CT) scan revealed an osteolytic lesion with expansion of the clivus and preservation of the bony cortex. Endoscopic endonasal surgery was performed to diagnose and treat symptoms. The tumor was subtotally removed without any complications. The histopathological findings revealed typical schwannoma, which showed Antoni A and Antoni B patterns positive for S100 protein. Based on the preoperative imaging, intraoperative and histopathological findings, the tumor was considered to be an intraosseous schwannoma in the clivus, and no recurrence was observed after 1 year of postoperative follow-up. Conclusion: Even though the intraosseous schwannoma in the clivus is uncommon, it should be considered as a differential diagnosis if an expansive lesion without destruction of the cortical bone is shown on CT as well as iso-hyperintensity on T2-weighted magnetic resonance imaging.

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Successful management of a rare radius schwannoma mimicking malignant bone tumors: A case report and literature review

Sun

Khan²,

Zeng³

et al. 2023

Front. Surg.

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BackgroundSchwannomas are benign tumors originating from Schwann cells, frequently occurring in the spinal cord and peripheral nerves. Intraosseous schwannomas, a rare subset, account for approximately 0.2% of schwannomas. Intraosseous schwannomas commonly impinge the mandible, followed by the sacrum and the spine. By far, only three cases of radius intraosseous schwannomas have been reported in PubMed. The tumor was treated differently in all three cases, resulting in different outcomes.Case presentationA 29-year-old male construction engineer who complained of a painless mass on the radial aspect of the right forearm was diagnosed with an intraosseous schwannoma of the radius based on radiography, three-dimensional computed tomography reconstruction, magnetic resonance imaging, pathological examination, and immunohistochemistry. A different surgical approach was employed to reconstruct the radial graft defect using bone microrepair techniques, resulting in more reliable bone healing and early functional recovery. Meanwhile, no clinical and radiographic findings suggestive of recurrence were observed at the 12-month follow-up.ConclusionVascularized bone flap transplantation combined with three-dimensional imaging reconstruction planning might yield better results for repairing small segmental bone defects of the radius caused by intraosseous schwannomas.

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Intraosseous schwannoma of the occipital bone: a case report

Abstract: Intraosseous schwanomma should be considered in the differential diagnosis of skull vault lesions in the pediatric population and can be successfully managed with surgical excision.

Cited by 4 publications

References 7 publications

Intraosseous Schwannoma of the Frontal Bone: A Case Report and Review of the Literature

Intraosseous Schwannoma of the Frontal Bone: A Case Report and Review of the Literature

Intraosseous schwannoma in the clivus mimicking chordoma treated with endoscopic endonasal surgery: A case report

Successful management of a rare radius schwannoma mimicking malignant bone tumors: A case report and literature review

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