1
|
Rades D, Zemskova O, Gliemroth J, Yu NY. The Role of Radiotherapy for Meningeal Melanocytomas - A 20 Year Update. In Vivo 2024; 38:1220-1228. [PMID: 38688652 PMCID: PMC11059860 DOI: 10.21873/invivo.13558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND/AIM Meningeal melanocytomas are rare tumors of the central nervous system and optimal treatment needs further clarification. This study compared subtotal resection (STR), STR plus radiation therapy (RT), gross total resection (GTR), and GTR+RT to better define the role of postoperative RT. PATIENTS AND METHODS All cases reported in the literature were reviewed. Patients (n=184) with complete data were analyzed for local control (LC) and overall survival (OS). RESULTS On univariate analysis, GTR (vs. STR) was associated with improved LC (p=0.016). When comparing the treatment regimens, best and worst results were found after GTR+RT and STR alone, respectively (p<0.001). On univariate analysis, GTR resulted in better OS than STR (p=0.041). Moreover, the treatment regimen had a significant impact on OS (p=0.049). On multivariate analyses of LC and OS, extent of resection and treatment regimen were found to be significant factors. After STR, RT significantly improved LC but not OS. After GTR, RT did not significantly improve LC or OS. CONCLUSION GTR was significantly superior to STR regarding LC and OS. STR+RT resulted in significantly better LC when compared to STR alone.
Collapse
Affiliation(s)
- Dirk Rades
- Department of Radiation Oncology, University of Lübeck, Lübeck, Germany;
- Department of Radiation Oncology, University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Oksana Zemskova
- Department of Radiation Oncology, University of Lübeck, Lübeck, Germany
- Department of Radioneurosurgery, Romodanov Neurosurgery Institute, Kyiv, Ukraine
| | - Jan Gliemroth
- Department of Neurosurgery, University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Nathan Y Yu
- Department of Radiation Oncology, Mayo Clinic, Phoenix, AZ, U.S.A
| |
Collapse
|
2
|
Parwez R, Ahmed R, Baig A, Ruiz F, Baig Mirza A, Sadek AR, Arvin B, Qureshi A. Intradural extramedullary meningeal melanocytoma: a case report and literature review. J Surg Case Rep 2023; 2023:rjad002. [PMID: 36727122 PMCID: PMC9880139 DOI: 10.1093/jscr/rjad002] [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] [Received: 11/27/2022] [Accepted: 01/02/2023] [Indexed: 01/28/2023] Open
Abstract
Primary meningeal melanocytomas are extremely rare, benign tumours arising from the leptomeninges. While they are considered to be benign lesions, there is potential for their growth and transformation into malignant melanomas. They are commonly found in the cervical spine, with a decreased incidence in the thoracic and lumbar regions. We present a case report of a 56-year-old man who presented to our unit with a 4-month history of lower limb weakness and a sensory level at T6. Magnetic resonance imaging shows an intradural extramedullary tumour. The patient underwent a thoracic debulking of the lesion with neurophysiological monitoring. Histopathology confirmed the diagnosis of melanocytoma of meningeal origin, with a low mitotic count. Our patient recovered well post-operatively with no complications. Surgical resection is an effective method to manage this tumour; however, adjuvant radiotherapy is advised due to the risk of recurrence and malignant transformation.
Collapse
Affiliation(s)
| | - Razna Ahmed
- Correspondence address. GKT School of Medical Education, King’s College London, Great Maze Pond, London SE1 1UL, UK. E-mail:
| | - Arsalan Baig
- Department of Neurosurgery, Queens Hospital Romford, London, UK
| | - Fernanda Ruiz
- Department of Neuropathology, UCL Institute of Neurology, London, UK
| | | | | | - Babak Arvin
- Department of Neurosurgery, Queens Hospital Romford, London, UK
| | - Anjum Qureshi
- Department of Neurosurgery, Queens Hospital Romford, London, UK
| |
Collapse
|
3
|
How Should We Treat Meningeal Melanocytoma? A Retrospective Analysis of Potential Treatment Strategies. Cancers (Basel) 2022; 14:cancers14235851. [PMID: 36497333 PMCID: PMC9738837 DOI: 10.3390/cancers14235851] [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] [Received: 10/03/2022] [Revised: 11/11/2022] [Accepted: 11/20/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Meningeal melanocytomas (MM) are rare primary melanocytic tumors of the leptomeninges with an incidence of 1:10,000,000. Until now, there has been only sparse information about this tumor entity. Here, we provide a meta-analysis of all cases published in the English language since 1972. METHODS A literature review was performed using PubMed and Web of Science. All published cases were evaluated for location, sex, age, therapeutic approach, and outcome. In total, we included 201 patient cases in our meta-analysis. RESULTS The majority of MM was diagnosed more frequently in men between the third and fifth decade of life. Surgery is the preferred therapeutic approach, and total resection is associated with the best outcome. Patients with partial resection or tumor recurrence benefit from adjuvant radiotherapy, whereas chemo- or immunotherapies do not improve the disease course. Malignant transformation was described in 18 patients. Of these, 11 patients developed metastasis. CONCLUSIONS We present the first retrospective meta-analysis of all MM cases published in the English language, including an evaluation of different treatment strategies allowing us to suggest a novel treatment guideline highlighting the importance of total resection for recurrence-free survival and characterizing those cases which benefit from adjuvant radiotherapy.
Collapse
|
4
|
Prasad GL, Divya S. Intracranial meningeal melanocytomas: Clinico-radiological characteristics and outcomes. A Literature review. World Neurosurg 2022; 168:298-308.e8. [PMID: 35977682 DOI: 10.1016/j.wneu.2022.08.051] [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: 05/16/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Melanocytes are neural crest derivatives. Intracranial meningeal melanocytomas (MM) are rare tumors and the available literature is sparse for these neoplasms. This present review aims to provide a detailed and comprehensive literature review of these tumors. MATERIALS AND METHODS By searching online databases, literature review was performed to include and analyze all cases of cranial MM reported till date. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed for the review process. RESULTS A total of 109 cases were analyzed. Male:female ratio was 1.2:1. The mean age was 40.3 years. The mean duration of symptoms was 23.9 months (range 2days-15 years). Cerebellopontine (CP) angle, suprasellar and Meckel cave were the most common locations. Sixty-four cases (58%) underwent GTR. Twenty-eight patients (26%) received some form of adjuvant radiation. There were 29(26%) recurrences and mean time to recurrence was 50.2 months. The recurrence rates (RR) for GTR and STR were 20% and 42% respectively. Extent of resection (STR) and tumor locations (CP angle and Meckel cave) were significantly associated with higher RR. Six (6.5%) cases had higher-grade transformations. CONCLUSIONS Complete surgical resection is the ideal treatment and adjuvant radiation is to be considered for residual/recurrent tumors. Adjuvant radiotherapy may also be prescribed despite GTR, in locations with higher RR such as CP angle and Meckel's cave. Because of higher-grade transformations and delayed recurrences, long-term follow-up is required.
Collapse
Affiliation(s)
| | - S Divya
- Department of Orthodontics, Manipal College of Dental Sciences, Manipal
| |
Collapse
|
5
|
Uramaru K, Sakata K, Shimohigoshi W, Kawasaki T, Manaka H. Primary Meningeal Melanocytoma Located in the Craniovertebral Junction: A Case Report and Literature Review. NMC Case Rep J 2022; 8:349-354. [PMID: 35079487 PMCID: PMC8769411 DOI: 10.2176/nmccrj.cr.2020-0191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/28/2020] [Indexed: 11/24/2022] Open
Abstract
Primary meningeal melanocytoma is a rare benign tumor in the central nervous system (CNS), comprising less than 0.1% of all intracranial tumors. A 44-year-old man presented with occipital headache, nausea, and vomiting. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a well-defined intradural extramedullary mass lesion at the craniovertebral junction (CVJ). Gross total removal was achieved, and the patient improved symptomatically. The pathologic findings were consistent with meningeal melanocytoma. No tumor recurrence was seen on follow-up MRI two years after surgery. Cases of primary meningeal melanocytoma located at the CVJ are rare. The preoperative differential diagnosis of meningeal melanocytoma from meningioma is sometimes difficult because of their similar appearance on CT and MRI. Complete surgical removal is curative for most cases. We present a case of gross total removal of a meningeal melanocytoma located in the CVJ with references to the literature.
Collapse
Affiliation(s)
- Koichi Uramaru
- Department of Neurosurgery, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Katsumi Sakata
- Department of Neurosurgery, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Wataru Shimohigoshi
- Department of Neurosurgery, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Takashi Kawasaki
- Department of Neurosurgery, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Hiroshi Manaka
- Department of Neurosurgery, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| |
Collapse
|
6
|
Liu ZQ, Liu C, Fu JX, He YQ, Wang Y, Huang TX. Primary intramedullary melanocytoma presenting with lower limbs, defecation, and erectile dysfunction: A case report and review of the literature. World J Clin Cases 2021; 9:8616-8626. [PMID: 34754876 PMCID: PMC8554421 DOI: 10.12998/wjcc.v9.i28.8616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/22/2021] [Accepted: 08/06/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Primary intramedullary melanocytoma is an exceedingly rare type of primary melanocytic tumor in the central nervous system. Unfortunately, primary intramedullary melanocytoma lacks specificity in clinical symptoms and imaging features and there is currently no standard strategy for diagnosis or treatment.
CASE SUMMARY A 52-year-old male patient suffered from weakness and numbness involving the bilateral lower limbs for 18 mo, and defecation and erectile dysfunction for 6 mo. Furthermore, these symptoms started to worsen for the last 3 mo. Preoperative magnetic resonance imaging (MRI) revealed an intramedullary tumor located at the T9-T10 level. In subsequently surgery, the maximal safe resection extent approached to 98%. The lesion was confirmed to be melanocytoma by pathological examination. In addition, the possibility of original melanocytoma outside the spinal cord was excluded after the examination of the whole body. Therefore, a diagnosis of primary intramedullary melanocytoma was established. The patient refused to accept radiotherapy or Gamma Knife, but MRI examination on July 28, 2020 showed no sign of development. In addition, on April 10, 2021, the recent review showed that the disorder of defecation and lower limbs improved further but erectile dysfunction benefited a little from the surgery.
CONCLUSION After diagnosing intramedullary melanocytoma by postoperative pathology, the inspection of the whole body contributed to excluding the possibility of metastasis from other regions and further suggested a diagnosis of primary intramedullary melanocytoma. Complete resection, adjuvant radiation, and regular review are critical. In addition, maximal safe resection also benefits prognosis while the tumor is difficult to be resected totally.
Collapse
Affiliation(s)
- Zhi-Qiang Liu
- Department of Neuroscience, Erasmus Medical Center, Erasmus University Rotterdam, Rotterdam 3015 AA, Netherlands
| | - Chao Liu
- Department of Oncology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Jia-Xin Fu
- Grade of 2015 in Oral Medicine, Medical College of Jinzhou Medical University, Jinzhou 121001, Liaoning Province, China
| | - Yan-Qing He
- Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Ying Wang
- Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| | - Tian-Xiang Huang
- Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
| |
Collapse
|
7
|
Tep AC, Kelly PD, Scarpelli DB, Bergue B, III SM, Jaboin JJ. A National Cancer Database analysis of the patterns of care for meningeal melanocytoma. Future Oncol 2021; 17:3243-3251. [PMID: 34156284 PMCID: PMC9912248 DOI: 10.2217/fon-2020-0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To evaluate demographics, treatment patterns, radiotherapy utilization and patient outcomes in meningeal melanocytomas. Materials & methods: The National Cancer Database was queried for meningeal melanocytomas diagnosed in 2002-2016. The effects of demographic, clinical and treatment variables were determined via Kaplan-Meier log-rank and Cox regression analyses. Results: The median and 5-year overall survival were 57.46 months and 48%, respectively. Patients earning ≥$48K showed improved survival (p = 0.0319). Radiotherapy and chemotherapy were utilized in 37.7 and 9% of patients, respectively. Conclusion: Income significantly affected survival. Surgery remains the mainstay approach. Radiotherapy was delivered in more than one-third of patients but did not impact survival. However, further analyses were limited by poor treatment modality information in the database.
Collapse
Affiliation(s)
- Amanda C Tep
- Department of Radiation Medicine, Oregon Health & Science University, Portland, OR 97239, USA
| | - Patrick D Kelly
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, TN 37212, USA
| | - Daphne B Scarpelli
- Department of Radiation Medicine, Oregon Health & Science University, Portland, OR 97239, USA
| | - Bailey Bergue
- Department of Radiation Medicine, Oregon Health & Science University, Portland, OR 97239, USA
| | | | - Jerry J Jaboin
- Department of Radiation Medicine, Oregon Health & Science University, Portland, OR 97239, USA ,Author for correspondence: Tel.: +1 503 494 8996;
| |
Collapse
|
8
|
Hean V, Bouleftour W, Ramirez C, Forest F, Boutet C, Rivoirard R. Nivolumab as adjuvant treatment for a spinal melanocytoma: A case report. Medicine (Baltimore) 2021; 100:e25862. [PMID: 34106633 PMCID: PMC8133133 DOI: 10.1097/md.0000000000025862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 11/25/2022] Open
Abstract
RATIONALE Meningeal melanocytoma is a rare benign melanocytic tumor of the central nervous system. We report for the first time a case of meningeal melanocytoma treated with immunotherapy. PATIENT CONCERNS A 70-year-old man with no medical history was admitted to the Emergency Room. He suffered from a motor and sensory deficit in his left lower limb and a bilateral upper arm neuralgia. DIAGNOSES A contrast-enhanced magnetic resonance imaging (MRI) was performed. It showed a C7-T1 bleeding intramedullary tumor. Laminectomy was decided and performed. The results of the pathologic examination showed a melanocytic tumor harboring GNAQ mutation. Meningeal melanocytoma was the final diagnosis. INTERVENTIONS The patient was treated with 10 radiotherapy sessions and 6 cycles of nivolumab. A year later, the patient experienced neuralgia again with severe pain and an increasing sensory motor deficit. He underwent a second surgery that was incomplete. As the tumor kept growing, he received temozolomide. But the 6th cycle had to be interrupted due to bedsore infection in the hip area. OUTCOMES Disease progression finally led to the patient's death 3 years after diagnosis. LESSONS This case report is the first about a patient with meningeal melanocytoma treated with immunotherapy. Treatment based on biomolecular mutations will probably change spinal melanocytoma therapeutic approach in the next few years.
Collapse
Affiliation(s)
- Virginie Hean
- Service de Neurologie, CHU de Saint-Etienne, Hôpital Nord, Avenue Albert Raimond, Saint Etienne CEDEX 2
| | - Wafa Bouleftour
- Département d’Oncologie Médicale, Institut de Cancérologie Lucien Neuwirth, Saint-Priest-en-Jarez
| | - Carole Ramirez
- Service de Neurologie, CHU de Saint-Etienne, Hôpital Nord, Avenue Albert Raimond, Saint Etienne CEDEX 2
- Département d’Oncologie Médicale, Institut de Cancérologie Lucien Neuwirth, Saint-Priest-en-Jarez
| | - Fabien Forest
- Laboratoire d’Anatomie et Cytologie Pathologiques, CHU de Saint-Etienne, Hôpital Nord, Avenue Albert Raimond, Saint Etienne CEDEX 2
| | - Claire Boutet
- Service de Radiologie, CHU de Saint-Etienne, Hôpital Nord, Avenue Albert Raimond, Saint Etienne CEDEX, France
| | - Romain Rivoirard
- Département d’Oncologie Médicale, Institut de Cancérologie Lucien Neuwirth, Saint-Priest-en-Jarez
| |
Collapse
|
9
|
Al-Abdulwahhab AH, Al-Sharydah AM, Al-Suhibani SS, Al-Shayji H, Al-Saad I, Al-Issawi W. Primary pigmented meningeal melanocytoma originating in Meckel cave in a patient with carney complex: A case report. Medicine (Baltimore) 2020; 99:e18783. [PMID: 32011473 PMCID: PMC7220446 DOI: 10.1097/md.0000000000018783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
RATIONALE Primary melanin-producing tumors are rare extra-axial neoplasms OPEN of the central nervous system. In the literature, few case reports have discussed neoplasms involving the cavernous sinus; of these, only 4 have reported on neoplasms originating in Meckel cave. The diagnostic approach, including clinical and radiological analysis, is challenging, and cytopathological assessment with a molecular basis is the best approach to discriminate between these lesions. Herein, we discuss the pathophysiology, diagnostic approach, intraoperative features, and postoperative management in a unique case of primary pigmented meningeal melanocytoma originating in Meckel cave in a patient who was diagnosed with Carney complex (CCx) and sickle cell disease (SCD). PATIENT CONCERNS A 23-year-old man diagnosed with SCD had also been diagnosed previously with CCx, without any familial history or neurocutaneous melanosis. He had experienced headaches accompanied by left facial pain and paresthesia for 2 months. DIAGNOSIS The initial computed tomography scan and magnetic resonance imaging (MRI) revealed a mass arising from the left Meckel cave. On MRI, it followed the signal intensity of melanin. He underwent subtotal resection of the mass. Considering the patient's history of CCx, melanocytic schwannoma was the most relevant diagnosis. A postoperative histopathological examination was suggestive of benign pigmented meningeal melanocytoma. INTERVENTIONS The patient underwent an uneventful subtotal resection of the mass through a left temporal linear incision. OUTCOMES The patient showed progressive improvement of neurologic deficits, and after 2 years of follow-up, he did not present with any new complaints. LESSONS To the best of our knowledge, this is the first report of the unusual presentation of both SCD, as well as of primary pigmented meningeal melanocytoma in a patient with CCx. Complete surgical resection can be curative in most cases of melanocytoma. The presence of CCx with SCD suggests potential shared genetic contributions that will require further exploration.
Collapse
Affiliation(s)
| | | | | | | | | | - Wissam Al-Issawi
- Neurosurgery Department, Imam Abdulrahman Bin Faisal University, King Fahd Hospital of the University, Saudi Arabia
| |
Collapse
|
10
|
Pimentel J, Afonso A, Roque R, Farias JP. A 82-Year-Old Man with an Extra-Axial Frontal Mass. Brain Pathol 2019; 29:307-308. [PMID: 30821024 DOI: 10.1111/bpa.12707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- José Pimentel
- Department of Pathology, Hospital Cuf Descobertas, Lisbon, Portugal.,Laboratory of Neuropathology, Department of Neurology, Hospital de Santa Maria (CHLN), Lisbon, Portugal.,Lisbon Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Afonso
- Department of Pathology, Hospital Cuf Descobertas, Lisbon, Portugal
| | - Rafael Roque
- Laboratory of Neuropathology, Department of Neurology, Hospital de Santa Maria (CHLN), Lisbon, Portugal
| | - João Paulo Farias
- Department of Neurosurgery, Hospital Cuf Descobertas, Lisbon, Portugal
| |
Collapse
|
11
|
Gamoh S, Tsuno T, Akiyama H, Kotaki S, Nakanishi T, Tsuji K, Yoshida H, Shimizutani K. Intracranial meningeal melanocytoma diagnosed using an interdisciplinary approach: a case report and review of the literature. J Med Case Rep 2018; 12:177. [PMID: 29941032 PMCID: PMC6020204 DOI: 10.1186/s13256-018-1725-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/25/2018] [Indexed: 12/29/2022] Open
Abstract
Background Meningeal melanocytoma is a rare pigmented tumor arising from leptomeningeal melanocytes. Patients with this tumor might initially consult a dentist because a mass lesion in Meckel’s cave could manifest as dental pain and malocclusion, thereby mimicking temporomandibular disorder. The diagnostic approach, especially using imaging modalities, would be challenging in such cases unless an interdisciplinary approach is used. Case presentation Here, we report a case of a 39-year-old Japanese man who had a history of pain and numbness on the left side of his face and malocclusion for 3 months before the initial visit. The diagnosis was primary intracranial meningeal melanocytoma arising from Meckel’s cave. Conclusions The process by which the final diagnosis of meningeal melanocytoma was reached highlights the importance of collaboration between the medical and dental disciplines. This case also demonstrates that meningeal melanocytoma has a specific signal pattern on magnetic resonance imaging, including high signal intensity on T1-weighted images and low signal intensity on T2-weighted images.
Collapse
Affiliation(s)
- Shoko Gamoh
- Health Promotion Division, Public Health Bureau, Osaka City Government, Osaka, Japan.
| | - Takaya Tsuno
- Department of Neurosurgery, Kochi Health Sciences Center, Kochi, Japan
| | - Hironori Akiyama
- Department of Oral Radiology, Osaka Dental University, Osaka, Japan
| | - Shinya Kotaki
- Department of Oral Radiology, Osaka Dental University, Osaka, Japan
| | - Tamaki Nakanishi
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Kaname Tsuji
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Hiroaki Yoshida
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | | |
Collapse
|
12
|
Li XL, Dai SD. Melanotic Schwannoma: Two Cases of Rare Lesions. Pathol Oncol Res 2018; 25:1667-1670. [PMID: 29740763 DOI: 10.1007/s12253-018-0417-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 04/26/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Li Li
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning, China
| | - Shun-Dong Dai
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning, China.
| |
Collapse
|