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Korytkowski PD, Kravtsov O, Hariri D, Damron TA. Ancient Schwannoma of the Thigh: Metaplastic Ossification, Cartilage Formation, and Extensive Calcification. Cureus 2024; 16:e53790. [PMID: 38465065 PMCID: PMC10923672 DOI: 10.7759/cureus.53790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2024] [Indexed: 03/12/2024] Open
Abstract
Benign soft tissue masses that present with atypical features on imaging may erroneously be diagnosed as malignant processes. An ancient schwannoma, a schwannoma variant with pronounced degenerative features, is one possible etiology of an incidental soft tissue tumor. This case report describes a 69-year-old male with a history of lung carcinosarcoma who presented to the orthopedic oncology office following an incidental positron emission tomography-computed tomography (PET-CT) finding of a posterior, lateral thigh mass with extensive calcifications. Subsequent excision and pathological analysis revealed an ancient schwannoma with advanced degenerative features, including metaplastic bone and cartilage formation. Various degenerative changes may typically be identified with pathological analysis. In addition to the degenerative findings on pathological analysis, our case highlights an atypical instance where extensive calcification and ossification are evident radiographically. This case emphasizes the importance of considering ancient schwannoma when a calcified soft tissue mass is encountered, in addition to the list of more common calcified soft tissue masses.
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Affiliation(s)
- Paul D Korytkowski
- Orthopedic Surgery Department, State University of New York Upstate Medical University, Syracuse, USA
| | - Oleksandr Kravtsov
- Pathology Department, State University of New York Upstate Medical University, Syracuse, USA
| | - Dana Hariri
- Pathology Department, State University of New York Upstate Medical University, Syracuse, USA
| | - Timothy A Damron
- Orthopedic Surgery Department, State University of New York Upstate Medical University, Syracuse, USA
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2
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Fountain HB, Brusko GD, Rosenberg AE, Levy AS, Cordeiro JG. Ancient Schwannoma Presenting at the Cauda Equina: A Report of a Rare Case. Cureus 2023; 15:e40430. [PMID: 37456500 PMCID: PMC10348804 DOI: 10.7759/cureus.40430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2023] [Indexed: 07/18/2023] Open
Abstract
Ancient schwannoma is an uncommon variant of schwannoma. While many reports have presented defining histologic and clinical features of ancient schwannoma, there are only a very few cases in the literature, to our knowledge, of ancient schwannoma presenting at the cauda equina. The current report of ancient schwannoma presenting at the cauda equina adds to the literature and discusses the identification of specific histologic characteristics, the role of conservative medical management, surgical resection, and prognostication in this select subset of patients.
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Affiliation(s)
- Hayes B Fountain
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - G Damian Brusko
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Andrew E Rosenberg
- Department of Pathology, University of Miami Miller School of Medicine, Miami, USA
| | - Adam S Levy
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Joacir G Cordeiro
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
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3
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Swiatek VM, Stein KP, Cukaz HB, Rashidi A, Skalej M, Mawrin C, Sandalcioglu IE, Neyazi B. Spinal intramedullary schwannomas-report of a case and extensive review of the literature. Neurosurg Rev 2021; 44:1833-1852. [PMID: 32935226 PMCID: PMC8338859 DOI: 10.1007/s10143-020-01357-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/29/2020] [Accepted: 07/20/2020] [Indexed: 12/11/2022]
Abstract
Intramedullary schwannomas (IMS) represent exceptional rare pathologies. They commonly present as solitary lesions; only five cases of multiple IMS have been described so far. Here, we report the sixth case of a woman with multiple IMS. Additionally, we performed the first complete systematic review of the literature for all cases reporting IMS. We performed a systematic review of the literature in PubMed, EMBASE and Cochrane Central Register of Controlled (CENTRAL) to retrieve all relevant studies and case reports on IMS. In a second step, we analysed all reported studies with respect to additional cases, which were not identified through the database search. Studies published in other languages than English were included. One hundred nineteen studies including 165 reported cases were included. In only five cases, the patients harboured more than one IMS. Gender ratio showed a ratio of nearly 3:2 (male:female); mean age of disease presentation was 40.2 years; 11 patients suffered from neurofibromatosis (NF) type 1 or 2 (6.6%). IMS are rare. Our first systematic review on this pathology revealed 166 cases, including the here reported case of multiple IMS. Our review offers a basis for further investigation on this disease.
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Affiliation(s)
- V M Swiatek
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - K-P Stein
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - H B Cukaz
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - A Rashidi
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - M Skalej
- Department of Neuroradiology, Otto-von-Guericke University, Magdeburg, Germany
| | - C Mawrin
- Department of Neuropathology, Otto-von-Guericke University, Magdeburg, Germany
| | - I E Sandalcioglu
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany
| | - B Neyazi
- Department of Neurosurgery, Otto-von-Guericke University, Magdeburg, Germany.
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4
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Tahta A, Cetinkal A, Cakir A, Sekerci Z. Intramedullary schwannoma of cervicomedullary junction: A case report. Neurochirurgie 2021; 68:331-334. [PMID: 33845116 DOI: 10.1016/j.neuchi.2021.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/14/2021] [Accepted: 03/06/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Intramedullary schwannomas of brain stem and spinal cord are extremely rare. In almost all cases, homogeneous, asymmetrical or circular intensive gadolinium enhancement has been demonstrated. However, no cases reported previously with minimal contrast enhancement in cervicomedullary junction. CASE DESCRIPTION A 38-year old man presented with a one-month history of constant, radiative right shoulder and arm pain. There was no pathological finding in his neurological examination. Also, physical evidence or family history of neurofibromatosis was not found. Magnetic resonance imaging of brain and cervical spine showed intramedullary, solid-cystic lesion localized in the cervicomedullary junction with unobvious gadolinium enhancement. The mass was gross totally resected through a sub-occipital craniotomy via midline approach. Postoperative pathological examination confirmed diagnosis of schwannoma. No changes were detected in the neurological examination of the patient after the operation. CONCLUSIONS There are 3 previously reported intramedullary schwannomas of the cervicomedullary junction in the literature. To the best of our knowledge, this is the first case of unobvious contrast enhancing intramedullary schwannoma of the cervicomedullary junction. The possibility of schwannoma should not be excluded when a mass with slight contrast enhancement is detected in the intramedullary region of the cervicomedullary junction.
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Affiliation(s)
- A Tahta
- Department of neurosurgery, Istanbul Medipol University, School of medicine, TEM Goztepe exit, Bagcilar/Istanbul, Turkey.
| | - A Cetinkal
- Department of neurosurgery, Istanbul Medipol University, School of medicine, TEM Goztepe exit, Bagcilar/Istanbul, Turkey
| | - A Cakir
- Department of pathology, Istanbul Medipol University, School of medicine, Istanbul, Turkey
| | - Z Sekerci
- Department of neurosurgery, Istanbul Medipol University, School of medicine, TEM Goztepe exit, Bagcilar/Istanbul, Turkey
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5
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Extradural ancient schwannoma of the spine: 2 cases and literature review. INTERDISCIPLINARY NEUROSURGERY 2021. [DOI: 10.1016/j.inat.2020.101016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Din NU, Fritchie K, Tariq MU, Ahmed A, Ahmad Z. Calcification and ossification in conventional schwannoma: A clinicopathologic study of 32 cases. Neuropathology 2019; 40:144-151. [PMID: 31793063 DOI: 10.1111/neup.12622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/25/2019] [Accepted: 10/16/2019] [Indexed: 11/30/2022]
Abstract
Calcification and ossification are uncommon in schwannomas; however, when present these findings may cause diagnostic confusion with other mesenchymal tumors which more frequently harbor these features. We sought to better characterize the type and rate of calcification and ossification in schwannomas. Cases of schwannoma diagnosed at our institution from 2005 to 2019 were reviewed to determine the type and amount of calcification and ossification present. Of 2116 total cases of schwannoma reported during the study period, 38 cases harbored calcification or ossification per the pathology report. Thirty-two of the 38 cases had slides available for review, of which 27 (84.3%) showed calcification, nine showed ossification (28.1%), and four (12.5%) cases demonstrated both. Foci of ossification typically occurred adjacent to large vessels. Of the 27 cases showing calcification, coarse dystrophic calcification was seen in 22 cases, psammomatous calcification in nine cases, and combined dystrophic and psammomatous calcification was seen in four cases. Cases with psammomatous calcification predominantly occurred in spinal roots and cerebellopontine angle of a younger age group with almost equal gender distribution. All four cases tested for protein kinase cyclic adenosine monophosphate-dependent type I regulatory subunit alpha immunohistochemical stain demonstrated retained expression. We confirm that calcification and ossification are rare findings in schwannoma. Awareness that these features may be present in these tumors will prevent misdiagnosis and ensure appropriate clinical management.
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Affiliation(s)
- Nasir U Din
- Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi, Pakistan
| | - Karen Fritchie
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Muhammad U Tariq
- Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi, Pakistan
| | - Arsalan Ahmed
- Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi, Pakistan
| | - Zubair Ahmad
- Department of Pathology and Laboratory Medicine, Aga Khan University Hospital, Karachi, Pakistan
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Zhong B, Shao Z, Pan H. Intraspinal Canal Schwannoma with Extensive Calcification: Case Report and Literature Review. World Neurosurg 2019; 134:555-559. [PMID: 31778833 DOI: 10.1016/j.wneu.2019.11.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 11/17/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Schwannomas are the most common benign tumors in the intraspinal location, with slow-growing and nonaggressive features. Calcification is not a common histopathological and radiological feature in schwannoma. CASE DESCRIPTION We report the case of a 43-year-old man with soreness in the lower back, left buttock, and lower limb of 1 month's duration. On magnetic resonance imaging and computed tomography, an intradural mass with extensive calcification was found at the L1-L2 level. The tumor was completely resected, with sacrifice of 1 nerve root. Postoperatively, his symptoms were relieved, and no dysfunction of the lower limbs and sphincter was observed. Pathologically, the tumor was diagnosed as a schwannoma with extensive calcification. At the 7-month follow-up examination, no complaints were found. CONCLUSION Although intraspinal schwannoma with extensive calcification is rare, which increases the difficulty of an accurate diagnosis preoperatively, the tumor can be completely removed with or without excision of the nonfunctional nerve roots.
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Affiliation(s)
- Binlong Zhong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haitao Pan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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8
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Dai LM, Qiu Y, Cen B, Lv J. Intramedullary Schwannoma of Cervical Spinal Cord Presenting Inconspicuous Enhancement with Gadolinium. World Neurosurg 2019; 127:418-422. [PMID: 31028978 DOI: 10.1016/j.wneu.2019.04.118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/12/2019] [Accepted: 04/13/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Intramedullary schwannomas of the spinal cord are extremely rare. Most previous studies are case reports, which have found that intramedullary schwannomas could be homogeneous or asymmetrically enhanced with gadolinium. However, intramedullary schwannomas with minimal enhancement have not been reported. CASE DESCRIPTION This article describes a 34-year-old patient who presented with nonradiative neck pain, progressive weakness of the left limbs, and sensory deficit of both lower extremities. Preoperative examinations such as magnetic resonance imaging (MRI) were performed, and the patient underwent surgical treatment. MRI showed that the lesion presented unsharp enhancement with gadolinium on T1-weighted images. Histopathologic findings were consistent with the diagnosis of schwannoma. CONCLUSIONS We report a case of intramedullary schwannoma that presented inconspicuous enhancement with gadolinium. MRI is useful but cannot be used to differentiate schwannomas from other intramedullary spinal tumours. Surgical resection is the most vital factor for the treatment of intramedullary schwannoma.
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Affiliation(s)
- Li Ming Dai
- Department of Neurosurgery, Wuhan Brain Hospital, Wuhan City, Hubei Province, China
| | - Yong Qiu
- Department of Neurosurgery, Wuhan Brain Hospital, Wuhan City, Hubei Province, China.
| | - Bo Cen
- Department of Neurosurgery, Wuhan Brain Hospital, Wuhan City, Hubei Province, China
| | - Jing Lv
- Department of Pathology, Wuhan Brain Hospital, Wuhan City, Hubei Province, China
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Chen F, Zhao S, Yu Y, Chen D. Intraparenchymal schwannoma with calcification of the temporal lobe: Case report and literature review. Medicine (Baltimore) 2019; 98:e14263. [PMID: 30681624 PMCID: PMC6358367 DOI: 10.1097/md.0000000000014263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
RATIONALE Intracranial schwannomas most frequently arise from the trigeminal nerve and the vestibular nerve. Schwannomas within the cerebral parenchyma are exceedingly rare. Additionally, calcification is an uncommon histopathological and radiological characteristic in schwannomas. PATIENT CONCERNS A 46-year-old man presented to us with sudden onset epileptic seizure and a 3-month history of intermittent headache. After admission, the physical and neurological examinations were all normal. Brain CT revealed an irregular, well-defined, hyperdense mass in the right temporal lobe. MRI showed a solid mass appearing iso- to hypointensity on T1-weighted imaging and heterogeneous intensity on T2-weighted imaging in the right temporal lobe; after Gd-DTPA administration, the lesion showed heterogeneous enhancement. DIAGNOSIS Histopathological examination revealed hyperchromatic nuclei and loose intercellular matrix with calcification. Immunohistochemical analysis demonstrated that the tumor was strongly positive for S100 protein but negative for GFAP and CK, which was consistent with a schwannoma. INTERVENTIONS AND OUTCOMES A surgical resection via the right temporal approach was performed. Intraoperatively, we noticed that the tumor was grayish yellow, capsuled, and located entirely within the temporal parenchyma. A gross total resection was achieved. The postoperative course was uneventful, and there was no epileptic seizure. LESSONS Intraparenchymal schwannoma with calcification is an uncommon histopathological and radiological characteristic in schwannomas. Intraparenchymal schwannoma with calcification is extremely rare. The early identification and appropriate surgical treatment should be highlighted.
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Affiliation(s)
| | - Shuai Zhao
- Anesthesiology, First Hospital of Jilin University, Changchun, China
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10
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Ancient Schwannoma of the Cauda Equina: Our Experience and Review of the Literature. Case Rep Surg 2017; 2016:7930521. [PMID: 28101394 PMCID: PMC5215132 DOI: 10.1155/2016/7930521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 10/01/2016] [Accepted: 10/10/2016] [Indexed: 11/18/2022] Open
Abstract
Ancient schwannomas (AS) are exceedingly rare variant of common schwannomas (CS). Only two cases involving the cauda equina region have been previously reported in literature. AS are typically associated with a higher histological degree of degenerative changes (Antoni B areas). It is of peculiar importance, according to our opinion, to outline that, because of their extremely slow growth (which explains the increase of the degenerative changes in respect to the CS) and their typical soft consistency in respect to their standard counterparts, AS usually imply an even better prognosis.
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11
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Jagannatha AT, Joshi KC, Rao S, Srikantha U, Varma RG, Mahadevan A. Paediatric calcified intramedullary schwannoma at conus: A common tumor in a vicarious location. J Pediatr Neurosci 2016; 11:319-321. [PMID: 28217154 PMCID: PMC5314845 DOI: 10.4103/1817-1745.199474] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Spinal schwannomas are commonly intradural extramedullary in location. As Schwann cells are not common in the central nervous system, intramedullary schwannomas are a rare entity. In adults, an estimated sixty cases have been reported in English literature. They are rarer in children (less than ten cases), and preoperative diagnosis becomes a prerogative in achieving total excision. Cervical cord is a common location and less commonly they occur in the conus. We report a rare case of calcified conus intramedullary schwannoma in a child without neurofibromatosis, who presented with conus-cauda syndrome of 1-year duration. Literature has been reviewed regarding its origin, pathophysiology, radiological features, and surgical management. This child underwent laminotomy and subtotal resection of the lesion. Histopathologically, tumor had typical features of schwannoma and was positive for S-100 immunoperoxidase. We believe that schwannoma needs to be considered in the preoperative differential diagnosis of a conus tumor in children as complete excision is possible in these benign tumors, thus affecting a cure.
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Affiliation(s)
- Aniruddha Tekkatte Jagannatha
- Department of Neurosurgery, M S Ramaiah Institute of Neurosciences, M S Ramaiah Medical College, Bengaluru, Karnataka, India
| | - Krishna Chaitanya Joshi
- Department of Neurosurgery, M S Ramaiah Institute of Neurosciences, M S Ramaiah Medical College, Bengaluru, Karnataka, India
| | - Shilpa Rao
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| | - Umesh Srikantha
- Department of Neurosurgery, M S Ramaiah Institute of Neurosciences, M S Ramaiah Medical College, Bengaluru, Karnataka, India
| | - Ravi Gopal Varma
- Department of Neurosurgery, M S Ramaiah Institute of Neurosciences, M S Ramaiah Medical College, Bengaluru, Karnataka, India
| | - Anita Mahadevan
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
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12
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Yang T, Wu L, Deng X, Yang C, Xu Y. Clinical features and surgical outcomes of intramedullary schwannomas. Acta Neurochir (Wien) 2014; 156:1789-97. [PMID: 25052458 DOI: 10.1007/s00701-014-2168-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 06/20/2014] [Indexed: 11/24/2022]
Abstract
OBJECT Intramedullary schwannomas are exceedingly rare. Most previous studies are case reports with an associated literature review. The aim of this study was to discuss the clinical features and the outcomes of microsurgery for these rare lesions. METHODS The authors retrospectively reviewed the data of twenty patients with intramedullary schwannomas. All patients had performed preoperative and postoperative magnetic resonance imaging (MRI) and underwent microsurgery. The diagnosis of intramedullary schwannomas was based on radiological and pathological criteria. Modified McCormick classification was applied to assess neurological function. RESULTS There were 15 males and five females with a mean age of 44.7 years. Ten tumors were located in the cervical cord, five in the thoracic cord, two in the cervicothoracic cord, two in the thoracolumbar cord and one in the conus medullaris. Patients presented with nonspecific symptoms and the mean duration of symptoms was 37.4 months. Intraoperatively, the tumor was connected to the dorsal rootlet in four cases. Gross total resection (GTR) of the tumor with a well-demarcated dissection plane was achieved in 16 cases, and subtotal resection (STR) was achieved in four cases. No patients received postoperative radiotherapy. During a mean follow-up period of 67.9 months, no recurrence or regrowth of the residual tumors was observed on MRI. Ninety percent of patients experienced an improvement in the McCormick grade and 10 % of patients maintained their preoperative status. CONCLUSIONS Intramedullary schwannomas are benign but clinically progressive lesions. The accurate diagnosis depends on pathology. For symptomatic patients, early surgery should be performed before neurological deficits deteriorate. When GTR cannot be achieved, STR of the tumor for decompression is advised. Postoperative radiotherapy is not recommended for these benign tumors. A good clinical outcome after GTR or STR can be expected.
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Affiliation(s)
- Tao Yang
- Department of Neurosurgery, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, No.6 Tiantan Xili, Dongcheng District, Beijing, 100050, China,
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13
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Zhang Y, Yu J, Qu L, Li Y. Calcification of vestibular schwannoma: a case report and literature review. World J Surg Oncol 2012; 10:207. [PMID: 23031739 PMCID: PMC3499265 DOI: 10.1186/1477-7819-10-207] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 09/21/2012] [Indexed: 12/02/2022] Open
Abstract
Calcification rarely occurs in vestibular schwannoma (VS), and only seven cases of calcified VS have been reported in the literature. Here, we report a 48-year-old man with VS, who had a history of progressive left-sided hearing loss for 3 years. Neurological examination revealed that he had left-sided hearing loss and left cerebellar ataxia. Magnetic resonance imaging and computerized tomography angiography showed a mass with calcification in the left cerebellopontine angle (CPA). The tumor was successfully removed via suboccipital craniotomy, and postoperative histopathology showed that the tumor was a schwannoma. We reviewed seven cases of calcified VS that were previously reported in the literature, and we analyzed and summarized the characteristics of these tumors, including the calcification, texture, and blood supply. We conclude that calcification in VS is associated with its texture and blood supply, and these characteristics affect the surgical removal of the tumor.
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Affiliation(s)
- Yang Zhang
- Department of Neurosurgery, First Hospital of Jilin University, 71 Xinmin Avenue, Changchun, 130021, China
| | - Jinlu Yu
- Department of Neurosurgery, First Hospital of Jilin University, 71 Xinmin Avenue, Changchun, 130021, China
| | - Limei Qu
- Department of Pathology, First Hospital of Jilin University, 71 Xinmin Avenue, Changchun, 130021, China
| | - Yunqian Li
- Department of Neurosurgery, First Hospital of Jilin University, 71 Xinmin Avenue, Changchun, 130021, China
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14
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Teo LC, Shen CY, Tsai CH, Liu JT. Intramedullary schwannoma of the cervical spinal cord. FORMOSAN JOURNAL OF SURGERY 2012. [DOI: 10.1016/j.fjs.2012.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Sinonasal schwannoma with new bone formation expressing bone morphogenic protein. Int J Otolaryngol 2010; 2010:154948. [PMID: 21197441 PMCID: PMC3010644 DOI: 10.1155/2010/154948] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Accepted: 11/22/2010] [Indexed: 11/18/2022] Open
Abstract
Schwannoma is a benign tumor that arises from the sheath of myelinated nerve fibers and may occur in any part of the body. Osteogenesis in schwannoma is extremely rare and, to date, new bone formation in sinonasal schwannoma has not yet been reported. Here, we describe the first reported case of sinonasal schwannoma with new bone formation. The tumor was successfully treated by endoscopic sinus surgery, and the patient showed no evidence of recurrence 24 months postoperatively. Immunohistochemically, the tumor expressed bone morphogenic protein 4, indicating a possible role of this protein in the new bone formation in schwannomas.
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