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Lefevre E, Dupont S, Liguoro D, Chasseloup F, Kamenicky P, Roblot P. Anatomy of the medial wall of the cavernous sinus: A systematic review of the literature. Clin Anat 2024. [PMID: 38468565 DOI: 10.1002/ca.24152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/13/2024]
Abstract
The existence, composition, and continuity of the medial wall of the cavernous sinus (MWCS) have been extensively studied and debated. However, the precise nature of this membrane remains unknown. Understanding the anatomical characteristics of the MWCS is crucial, notably in relation to pituitary adenomas, which often invade the cavernous sinus. Indeed, surgical treatment of those tumors is frequently incomplete because of such invasion. The anatomical and molecular basis of the peculiar and often lateralized tropism of adenomatous cells to the cavernous sinus is not yet understood and it has been suggested repeatedly that the MWCS is physiologically frail. During the past three decades, there have been several conflicting accounts of the existence, composition, and continuity of this medial wall, but methodological differences and varying definitions could have contributed to the current lack of consensus regarding it. The aim of this systematic review was to summarize previously published data concerning the existence, anatomy, composition, and continuity of the MWCS.
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Affiliation(s)
- Etienne Lefevre
- Physiologie et Physiopathologie Endocriniennes, Paris-Saclay University, INSERM U1185, Le Kremlin-Bicêtre, France
- Department of Neurosurgery, APHP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
- Laboratory of Anatomy, Sorbonne Université, Paris, France
| | - Sophie Dupont
- Laboratory of Anatomy, Sorbonne Université, Paris, France
- Department of Neurology, APHP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Dominique Liguoro
- Neurosurgery Department A, University Hospital of Bordeaux, Bordeaux, France
- Laboratory of Anatomy, Université de Bordeaux, Bordeaux, France
| | - Fanny Chasseloup
- Physiologie et Physiopathologie Endocriniennes, Paris-Saclay University, INSERM U1185, Le Kremlin-Bicêtre, France
- Service d'Endocrinologie et des Maladies de la Reproduction, Centre de Référence des maladies Rares de l'Hypophyse, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Peter Kamenicky
- Physiologie et Physiopathologie Endocriniennes, Paris-Saclay University, INSERM U1185, Le Kremlin-Bicêtre, France
- Service d'Endocrinologie et des Maladies de la Reproduction, Centre de Référence des maladies Rares de l'Hypophyse, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France
| | - Paul Roblot
- Neurosurgery Department A, University Hospital of Bordeaux, Bordeaux, France
- Laboratory of Anatomy, Université de Bordeaux, Bordeaux, France
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2
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Bharadwaj T, Chrungoo S, Verma D. Development of a novel thermogelling PEC-based ECM mimicking nanocomposite bioink for bone tissue engineering. J Biomater Sci Polym Ed 2023; 34:2516-2536. [PMID: 37768276 DOI: 10.1080/09205063.2023.2265143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 09/01/2023] [Indexed: 09/29/2023]
Abstract
Non-union of large bone defects has been an existing clinical problem. 3D extrusion-based bioprinting provides an efficient approach to tackle such problems. This approach enables the use of various biomaterials, cell types and growth factors in developing a superior bone graft that is specific to the defect. In this article, we have designed and printed an ECM mimicking, self-assembled polyelectrolyte complex (PEC) based fibrous bioink using natural polymers like chitosan-polygalacturonic acid (PGA) and other biomaterials - gelatin, laponite and nanohydroxyapatite with a modified 3D printer. The developed bioink possesses a thermo-reversible sol-gel transition at physiological pH and temperature. Here, we demonstrated that post-printing, our fiber-reinforced bioink had significant cell proliferation with cell viability of >80% and negligible cell morbidity. The practicability of developing this self-assembled PEC-based bioink was assessed. Bioink with 4% gelatin (PECHLG4) had optimal printability with a minimal swelling ratio of approximately 3%. The printed scaffold had integrity for a period of 8 days under 0.5 mg/mL lysozyme concentration. We also evaluated the mechanical property of the bioink using compression analysis which gave an elastic modulus of 16 KPa. This combination of natural polymers and nanocomposite, along with a fibrous network of PECs, is itself a novel approach for 3D bioprinting and can be a preliminary proposition for the treatment of large bone defects.
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Affiliation(s)
- Tanmay Bharadwaj
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Shreya Chrungoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Devendra Verma
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
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3
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He W, Fu X, Bai P, Zhang D, Cui H, Ma R. High-Performance Coaxial Asymmetry Fibrous Supercapacitors with a Poly(vinyl alcohol)-Montmorillonite Separator. Nano Lett 2021; 21:9164-9171. [PMID: 34699240 DOI: 10.1021/acs.nanolett.1c02998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fibrous supercapacitors have garnered great interest from researchers because of their large electrode/electrolyte interface area, short ion transport path, and high flexibility. However, obtaining a thin gel electrolyte interlayer with a high ion transport rate and uniform thickness is still challenging. Here, we proposed an efficient wet-spinning technique to fabricate uniform polyvinyl-montmorillonite tubular layers for the preparation of a high-performance coaxial asymmetry fibrous supercapacitor (AFSC). The coaxial AFSC shows ultrahigh energy densities in the range of 2.86-4.04 μW h cm-2 at power densities of 0.16-1.61 mW cm-2 while maintaining a long cycling life (94% retention even after 20 000 cycles). After charging at a constant voltage of 2.4 V for 30 s, the flexible watchband which is composed of three series-connected AFSCs could power a commercial electronic watch for more than 2 min. This work provides a universal strategy to fabricate high-performance and wearable energy storage devices.
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Affiliation(s)
- Wen He
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Xiang Fu
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Peijia Bai
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Ding Zhang
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Heng Cui
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
| | - Rujun Ma
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China
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Abstract
Angiomatoid fibrous histiocytoma (AFH) is a rare, slow-growing soft tissue tumor with an intermediate biologic potential and uncertain line of differentiation, and minimal metastatic potential. AFH may mimic both the clinical, histological, and radiological findings of several tumors; therefore, it is frequently misdiagnosed. Three cases of AFH were included in this study. A six-year-old male and two females with an age of 12 and 17 years are presented. The primary locations were in the right shoulder (case 1), left medial proximal thigh (case 2), and left lateral knee (case 3). Two cases (cases 2&3) were presented with a painful mass. In the three patients, the masses were firm, mobile, and not attached to the skin. Magnetic resonance imaging (MRI) was done, illustrating unspecific findings to reach a diagnosis. Needle biopsies were performed in all patient, and the diagnosis of AFH was reached. All three patients underwent wide surgical excision of the tumor. Patients were followed up routinely every three to four months with imaging studies to rule out recurrence and metastasis, for a period of 15 months (case 1), 26 months (case 2), and 19 months (case 3), which all resulted negatively.
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Affiliation(s)
| | - Abdulaziz H Abed
- Medicine and Surgery, Alfaisal University College of Medicine, Riyadh, SAU
| | | | | | - Mahmood Shaheen
- Orthopaedics, King Faisal Specialist Hospital and Research Centre, Riyadh, SAU
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Guo H, Liang H, Wang J, Wen S, Wang Y, Wang Y, Ma Z. Giant Intraparenchymal Meningioma in a Female Child: Case Report and Literature Review. Cancer Manag Res 2021; 13:1989-1997. [PMID: 33658857 PMCID: PMC7920497 DOI: 10.2147/cmar.s294224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/29/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Intraparenchymal meningiomas without dural attachment are extremely rare, especially in female children. To our knowledge, fibrous intraparenchymal meningioma located in the temporal lobe has never been reported in female children. The significance in the differential diagnosis of lesions in the temporal lobe should be emphasized. CASE PRESENTATION A 12-year-old girl was admitted to our hospital, complaining of recurrent generalized seizures for 2 months. Magnetic resonance imaging demonstrated a solid lesion located in the temporal lobe. The lesion underwent gross total resection. Histopathological examination indicated that the lesion was a fibrous meningioma. Postoperative rehabilitation was uneventful. CONCLUSION This case report presents an extremely unusual intraparenchymal fibrous meningioma of the temporal lobe with peritumoral edema and reviewed 21 intraparenchymal meningioma cases in children and to discuss the clinical presentation and treatment, differential diagnosis, and radiological features.
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Affiliation(s)
- Huachao Guo
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Hao Liang
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Jiaguang Wang
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Shuo Wen
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Yong Wang
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Yushe Wang
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
| | - Zhen Ma
- Department of Neurosurgery, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, People’s Republic of China
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Rahim AH, Hidajat NN, Ramdan A, Magetsari RMSN. Fibrous Dysplasia of the Spine-A Case Involving the Polyostotic Form Isolated to the Thoracolumbar Spine. Int J Spine Surg 2020; 14:S46-S51. [PMID: 33900944 DOI: 10.14444/7164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fibrous dysplasia of the spine in a polyostotic form is very rare, with fewer than 36 cases discussed in the literature and there is no such case in Indonesia that has been reported. The aim of this report is to present a case from Indonesia of polyostotic fibrous dysplasia isolated in the spine. We report a case of a 38-year-old Sundanese man with a 1-year history of progressive back pain and weakness of both lower extremities. There was no history leading to infection and no previous trauma. A physical examination revealed kyphoscoliotic deformity, a café au lait spot, tenderness at the thoracolumbar region, and neurological deficits. Laboratory studies were within normal ranges. Plain radiographs showed lytic lesion and kyphoscoliosis. Magnetic resonance imaging showed an endosteal scalloping, infiltrative process, expansion, and destruction in the vertebral bodies from T2 to L5. The findings of an aggressive destructive process was highly suspicious of a malignant process, relying on differential diagnosis and metastases, plasma cell myeloma, bone tumor and chronic infectious spondylitis. Histology revealed an irregularly oriented osteoid without osteoblastic rimming but surrounded by fibroblastic proliferation with a C-shaped sign. Investigations revealed a diagnosis of polyostotic fibrous dysplasia of the thoracolumbar spine in isolation. The patient underwent T5-S1 stabilization and bone grafting. At 1 year postoperative, the patient was asymptomatic; there was no recurrence and minimal neurological deficit with grade II on the modified McCormick scale. A case of the polyostotic form of fibrous dysplasia of the spine in isolation has never been reported in Indonesia. The extreme rarity of this type of presentation can pose a diagnostic dilemma, and in cases isolated to the spine, surgical treatment with posterior stabilization, decompression, and bone grafting gives a good functional outcome.
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Affiliation(s)
- Agus Hadian Rahim
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Padjadjaran University, Bandung, Indonesia
| | - Nucki Nursjamsi Hidajat
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Padjadjaran University, Bandung, Indonesia
| | - Ahmad Ramdan
- Head of Spine Division, Department of Orthopaedics and Traumatology, Faculty of Medicine, Padjadjaran University, Bandung, Indonesia
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Massoth LR, Selig MK, Little BP, Chebib I, Kradin RL. Multiple calcifying fibrous pseudotumors of the pleura: ultrastructural analysis provides insight on mechanism of dissemination. Ultrastruct Pathol 2020; 43:154-161. [PMID: 31746679 DOI: 10.1080/01913123.2019.1687631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Calcifying fibrous pseudotumor (CFP) is a rare, benign soft tissue tumor that may uncommonly arise in the pleura. These tumors can show multifocal dissemination across the pleural surface, but the mechanism underlying this dissemination is unclear. Review of previously reported cases of pleural CFP demonstrates a strong predilection for basal and diaphragmatic pleural surfaces, and a significantly higher rate of multifocality compared with other locations. We present a 59-year-old male with multiple CFP of the pleura. Reactive-appearing adhesions spanning the pleural surfaces were present, and by electron microscopy, were involved by tumor. We suggest this is the likely mode of dissemination across the pleural surfaces.
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Affiliation(s)
- Lucas R Massoth
- Departments of Pathology (L.R.M., M.K.S., I.C., R.L.K.) and Radiology (B.P.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Martin K Selig
- Departments of Pathology (L.R.M., M.K.S., I.C., R.L.K.) and Radiology (B.P.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Brent P Little
- Departments of Pathology (L.R.M., M.K.S., I.C., R.L.K.) and Radiology (B.P.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Ivan Chebib
- Departments of Pathology (L.R.M., M.K.S., I.C., R.L.K.) and Radiology (B.P.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Richard L Kradin
- Departments of Pathology (L.R.M., M.K.S., I.C., R.L.K.) and Radiology (B.P.L.), Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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8
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Kumari N, Anthony ML, Durgapal P, Joshi PP, Rajput D, Singh A. Ossifying fibromyxoid tumor: Fine-needle aspiration cytology findings of a rare soft tissue neoplasm. Diagn Cytopathol 2020; 48:396-400. [PMID: 31925994 DOI: 10.1002/dc.24382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/30/2019] [Accepted: 01/03/2020] [Indexed: 11/12/2022]
Abstract
Ossifying fibromyxoid tumors (OFMTs) are rare tumors of uncertain origin and intermediate (rarely metastasizing) biologic potential, with characteristic morphology of an encapsulated tumor containing polygonal cells in an abundant fibromyxoid matrix surrounded by a peripheral layer of metaplastic lamellar bone. FNA cytology of OFMT has not been sufficiently reported and till date cytological features of only seven cases have been reported so far. We report another case of OFMT in a 55-year-old female presenting with longstanding swelling in thigh. On fine-needle aspiration, a tumor with moderate cellularity and myxoid areas was seen; coupled with compatible radiological findings, a diagnosis of OFMT was suggested. Establishing a correct diagnosis is important as although OFMT is benign in nature, local recurrences or rarely distant metastasis have been seen of this tumor. Hence, a high degree of suspicion with radiological correlation is of utmost importance for identification of this entity.
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Affiliation(s)
- Neha Kumari
- Department of Pathology, AIIMS RISHIKESH, Rishikesh, India
| | | | | | | | - Deepak Rajput
- Department of General Surgery, AIIMS RISHIKESH, Rishikesh, India
| | - Ashok Singh
- Department of Pathology, AIIMS RISHIKESH, Rishikesh, India
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9
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Stepančec H, Kokot Z, Keretić D, Radiković S, Grgurović D. Fibrous Hamartoma of Infancy in the Scrotum. European J Pediatr Surg Rep 2019; 7:e100-e103. [PMID: 31788409 PMCID: PMC6882684 DOI: 10.1055/s-0039-1697924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 08/20/2019] [Indexed: 11/09/2022] Open
Abstract
Fibrous hamartoma of infancy is a solid benign tumor of the subcutis, which usually occurs within the first 2 years of life. It predominantly occurs in males, and is clinically presented as a solid, painless, well-limited subcutaneous formation, tending to grow, and in most cases without any symptoms. It occurs in various locations. The aim of this case report was to present a case of a rare tumor of infancy in the scrotal region, in an 8-month-old male infant, with a nonspecific clinical picture, suggestive of a malignant formation, thus presenting a diagnostic challenge for a doctor. The tumor was completely removed. The diagnosis was confirmed by histopathological analysis. One year after the surgical procedure, a follow-up ultrasonography examination showed no relapse.
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Affiliation(s)
- Hrvoje Stepančec
- Department of Pediatric Surgery, Opca Bolnica Varazdin, Varazdin, Croatia
| | - Zoran Kokot
- Department of Pediatric Surgery, Opca Bolnica Varazdin, Varazdin, Croatia
| | - Draženko Keretić
- Department of Pediatric Surgery, Opca Bolnica Varazdin, Varazdin, Croatia
| | - Sandra Radiković
- Department of Pathology, Cithology and Forensic Medicine, Opca Bolnica Varazdin, Varazdin, Croatia
| | - Donat Grgurović
- Department of Plastic, Aesthetic and Reconstructive Surgery, Opca Bolnica Varazdin, Varazdin, Croatia
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10
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Liu S, Sotomi Y, Eggermont J, Nakazawa G, Torii S, Ijichi T, Onuma Y, Serruys PW, Lelieveldt BPF, Dijkstra J. Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images. J Biomed Opt 2017; 22:1-10. [PMID: 28901053 DOI: 10.1117/1.jbo.22.9.096008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/30/2017] [Indexed: 05/20/2023]
Abstract
An important application of intravascular optical coherence tomography (IVOCT) for atherosclerotic tissue analysis is using it to estimate attenuation and backscatter coefficients. This work aims at exploring the potential of the attenuation coefficient, a proposed backscatter term, and image intensities in distinguishing different atherosclerotic tissue types with a robust implementation of depth-resolved (DR) approach. Therefore, the DR model is introduced to estimate the attenuation coefficient and further extended to estimate the backscatter-related term in IVOCT images, such that values can be estimated per pixel without predefining any delineation for the estimation. In order to exclude noisy regions with a weak signal, an automated algorithm is implemented to determine the cut-off border in IVOCT images. The attenuation coefficient, backscatter term, and the image intensity are further analyzed in regions of interest, which have been delineated referring to their pathology counterparts. Local statistical values were reported and their distributions were further compared with a two-sample t-test to evaluate the potential for distinguishing six types of tissues. Results show that the IVOCT intensity, DR attenuation coefficient, and backscatter term extracted with the reported implementation are complementary to each other on characterizing six tissue types: mixed, calcification, fibrous, lipid-rich, macrophages, and necrotic core.
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Affiliation(s)
- Shengnan Liu
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
| | - Yohei Sotomi
- University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Jeroen Eggermont
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
| | - Gaku Nakazawa
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Sho Torii
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Takeshi Ijichi
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Yoshinobu Onuma
- Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands
- Cardialysis, Rotterdam, The Netherlands
| | - Patrick W Serruys
- International Centre for Circulatory Health, the National Heart and Lung Institute, Imperial College, United Kingdom
| | - Boudewijn P F Lelieveldt
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
- Delft University of Technology, Department of Intelligent Systems, Delft, The Netherlands
| | - Jouke Dijkstra
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
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11
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Liu S, Sotomi Y, Eggermont J, Nakazawa G, Torii S, Ijichi T, Onuma Y, Serruys PW, Lelieveldt BPF, Dijkstra J. Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images. J Biomed Opt 2017; 22:1-16. [PMID: 28901053 DOI: 10.1117/1.jbo.22.9.096004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/21/2017] [Indexed: 05/08/2023]
Abstract
An important application of intravascular optical coherence tomography (IVOCT) for atherosclerotic tissue analysis is using it to estimate attenuation and backscatter coefficients. This work aims at exploring the potential of the attenuation coefficient, a proposed backscatter term, and image intensities in distinguishing different atherosclerotic tissue types with a robust implementation of depth-resolved (DR) approach. Therefore, the DR model is introduced to estimate the attenuation coefficient and further extended to estimate the backscatter-related term in IVOCT images, such that values can be estimated per pixel without predefining any delineation for the estimation. In order to exclude noisy regions with a weak signal, an automated algorithm is implemented to determine the cut-off border in IVOCT images. The attenuation coefficient, backscatter term, and the image intensity are further analyzed in regions of interest, which have been delineated referring to their pathology counterparts. Local statistical values were reported and their distributions were further compared with a two-sample t-test to evaluate the potential for distinguishing six types of tissues. Results show that the IVOCT intensity, DR attenuation coefficient, and backscatter term extracted with the reported implementation are complementary to each other on characterizing six tissue types: mixed, calcification, fibrous, lipid-rich, macrophages, and necrotic core.
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Affiliation(s)
- Shengnan Liu
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
| | - Yohei Sotomi
- University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands
| | - Jeroen Eggermont
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
| | - Gaku Nakazawa
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Sho Torii
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Takeshi Ijichi
- Tokai University School of Medicine, Department of Cardiology, Kanaagawa, Japan
| | - Yoshinobu Onuma
- Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands
- Cardialysis, Rotterdam, The Netherlands
| | - Patrick W Serruys
- International Centre for Circulatory Health, the National Heart and Lung Institute, Imperial College, United Kingdom
| | - Boudewijn P F Lelieveldt
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
- Delft University of Technology, Department of Intelligent Systems, Delft, The Netherlands
| | - Jouke Dijkstra
- Leiden University Medical Center, Division of Imaging Processing, Department of Radiology, Leiden, The Netherlands
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12
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Ogden S, Harave S, McPartland J, Brennan B, Jeys L, Losty P, Pizer B. Angiomatoid fibrous histiocytoma: A case of local recurrence and metastases to loco-regional lymph nodes that responded to chemotherapy. Pediatr Blood Cancer 2017; 64. [PMID: 28012233 DOI: 10.1002/pbc.26376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/10/2016] [Accepted: 10/23/2016] [Indexed: 11/10/2022]
Abstract
Angiomatoid fibrous histiocytoma (AFH) is a rare soft tissue tumour with intermediate malignant potential. We report the case of a patient with local recurrence of AFH in two locations and lymph node metastases 18 months after primary surgical excision. The patient was treated with six cycles of ifosfamide and doxorubicin chemotherapy and a further three courses of ifosfamide monotherapy. Reassessment imaging showed a good response to chemotherapy with reduction in size of the two tumours of local recurrence and the lymph node metastases. This case demonstrates that AFH can respond to chemotherapy, even though it is rarely used.
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Affiliation(s)
- Sally Ogden
- Department of Oncology, Alder Hey Children's Hospital, Liverpool, Merseyside, UK
| | - Srikrishna Harave
- Department of Oncology, Alder Hey Children's Hospital, Liverpool, Merseyside, UK
| | - Jo McPartland
- Department of Oncology, Alder Hey Children's Hospital, Liverpool, Merseyside, UK
| | - Bernadette Brennan
- Department of Oncology, Royal Manchester Children's Hospital, Manchester, UK
| | - Lee Jeys
- Department of Orthopaedics, Royal Orthopaedic Hospital Birmingham, Birmingham, UK
| | - Paul Losty
- Department of Oncology, Alder Hey Children's Hospital, Liverpool, Merseyside, UK
| | - Barry Pizer
- Department of Oncology, Alder Hey Children's Hospital, Liverpool, Merseyside, UK
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Abstract
Solitary fibrous tumors are neoplasms of mesenchymal origin that may occur virtually in any body part, most commonly arising from the pleura. Solitary fibrous tumor of the kidney is exceptionally rare, and limited clinical knowledge regarding its behavior makes prognosis of the neoplasm difficult. We report a case of solitary fibrous tumor of the left kidney and describe its clinical, imaging, and pathological features.
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Affiliation(s)
| | | | | | - Swetha Vuyyuru
- American University of Antigua, Florida Hospital-Orlando
| | - Jeremy Burt
- Diagnostic Radiology, Florida Hospital-Orlando
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Li R, Xiang X, Tong X, Zou J, Li Q. Wearable double-twisted fibrous perovskite solar cell. Adv Mater 2015; 27:3831-5. [PMID: 25989248 DOI: 10.1002/adma.201501333] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 04/22/2015] [Indexed: 05/24/2023]
Abstract
Wearable double-twisted fibrous perovskite solar cells are developed based on flexible carbon nanotube fiber electrodes, which exhibit a maximum power conversion efficiency of 3.03% and bending stability larger than 1000 cycles, and maintain 89% efficiency after 96 h in ambient conditions if sealed by a transparent polymer layer. The obtained superior performance can shed light on future self-powering e-textiles.
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Affiliation(s)
- Ru Li
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Ruoshui Road 398, Suzhou, 215123, P. R. China
- University of Chinese Academy of Science, Yuquan Road 19, Beijing, 100049, China
| | - Xi Xiang
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Ruoshui Road 398, Suzhou, 215123, P. R. China
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai, 200444, P. R. China
| | - Xiao Tong
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Ruoshui Road 398, Suzhou, 215123, P. R. China
| | - Jingyun Zou
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Ruoshui Road 398, Suzhou, 215123, P. R. China
| | - Qingwen Li
- Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Ruoshui Road 398, Suzhou, 215123, P. R. China
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Chandanwale SS, Gore CR, Sammi AB, Shah KR, Kaur PR. Recurrent solitary fibrous tumor in distal lower extremity: An extremely rare entity. Int J Appl Basic Med Res 2014; 4:134-6. [PMID: 25143894 PMCID: PMC4137641 DOI: 10.4103/2229-516x.136809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 01/23/2014] [Indexed: 11/20/2022] Open
Abstract
Solitary fibrous tumor (SFT) represents a spectrum of mesenchymal tumors, encompassing tumors previously termed hemangiopericytoma, as having intermediate biological potential. Though they can occur at any site, lower distal extremity is a rare site and recurrence in it is extremely rare. Behavior of SFT is unpredictable. Histomorphology and clinical follow-up have poor correlation. The most important single indicator of clinical outcome is complete excision of the tumor at the time of primary presentation. Tumors with positive margins require close follow-up for several years owing to the potential for late local recurrence.
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Affiliation(s)
- Shirish S Chandanwale
- Department of Pathology, Padm. Dr. D. Y. Patil Medical College, Pimpri, Pune - 411 018, Maharashtra, India
| | - Charusheela R Gore
- Department of Pathology, Padm. Dr. D. Y. Patil Medical College, Pimpri, Pune - 411 018, Maharashtra, India
| | - Amit B Sammi
- Department of Pathology, Padm. Dr. D. Y. Patil Medical College, Pimpri, Pune - 411 018, Maharashtra, India
| | - Komal R Shah
- Department of Pathology, Padm. Dr. D. Y. Patil Medical College, Pimpri, Pune - 411 018, Maharashtra, India
| | - Parveen R Kaur
- Department of Pathology, Padm. Dr. D. Y. Patil Medical College, Pimpri, Pune - 411 018, Maharashtra, India
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16
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Kaya M, Tozak KÖ, Baran T, Sezen G, Sargin I. Natural porous and nano fiber chitin structure from Gammarus argaeus (Gammaridae Crustacea). EXCLI J 2013; 12:503-10. [PMID: 26966425 PMCID: PMC4778343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 04/12/2013] [Indexed: 10/25/2022]
Abstract
Chitin and its derivatives are commercially important biopolymers due to their applications in medicine, agriculture, water treatment, cosmetics and various biotechnological areas. Since chitin and its derivatives exhibit different chemical and physical properties depending on the source and isolation method, there is a growing demand for new chitin sources other than crab and shrimp worldwide. In this study Gammarus, a Crustacea, was investigated as a novel chitin source. Gammarus, which belongs to the family Gammaridae Crustacea, lives in the bottom of aquatic ecosystems. More than 200 species are known worldwide. One of these species, G. argaeus was investigated for chitin isolation. The alpha chitin isolated from G. argaeus was characterized by using analysis techniques such as infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). All these analyses confirmed that the isolated chitin from G. argaeus was in the alpha form. Furthermore, we described that dry weight of this species contained 11-12 % chitin. SEM examination of the isolated α-chitin revealed that it was composed of nanofibrils (15-55 nm) and pores (about 150 nm).
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Affiliation(s)
- Murat Kaya
- Aksaray University, Faculty of Science and Letters, Department of Biotechnology and Molecular Biology, 68100, Aksaray, Turkey,Aksaray University, Science and Technology Application and Research Center, 68100, Aksaray, Turkey,*To whom correspondence should be addressed: Murat Kaya, Aksaray University, Faculty of Science and Letters, Department of Biotechnology and Molecular Biology, 68100, Aksaray, Turkey; Tel.: +90-382-288-2184; Fax: +90-382-288-2125, E-mail:
| | - Kabil Özcan Tozak
- Aksaray University, Science and Technology Application and Research Center, 68100, Aksaray, Turkey,Aksaray University, Faculty of Science and Letters, Department of Chemistry, Aksaray, Turkey
| | - Talat Baran
- Aksaray University, Science and Technology Application and Research Center, 68100, Aksaray, Turkey,Aksaray University, Faculty of Science and Letters, Department of Chemistry, Aksaray, Turkey
| | - Göksal Sezen
- Harran University, Faculty of Science-Literature, Department of Biology, Sanliurfa, Turkey
| | - Idris Sargin
- Aksaray University, Science and Technology Application and Research Center, 68100, Aksaray, Turkey,Aksaray University, Faculty of Science and Letters, Department of Chemistry, Aksaray, Turkey
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Eid T, Ghostine B, Kreichaty G, Daher P, Ghanem I. Congenital costo-vertebral fibrous band and congenital kyphoscoliosis: a previously unreported combination. Eur Spine J 2013; 22 Suppl 3:S424-8. [PMID: 23314839 PMCID: PMC3641262 DOI: 10.1007/s00586-012-2570-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 10/10/2012] [Accepted: 11/03/2012] [Indexed: 11/29/2022]
Abstract
Congenital kyphoscoliosis (CKS) results from abnormal vertebral chondrification. Congenital fibrous bands occur in several locations with variable impact on vertebral development. We report a previously unreported case of a female infant with CKS presenting with an L2 hypoplastic vertebra and a costo-vertebral fibrous band extending to the skin in the form of a dimple. We also describe the therapeutic approach, consisting of surgical excision of the fibrous band and postoperative fulltime bracing, with a 7-year follow-up. We recommend a high index of suspicion in any unusual presentation of CKS and insist on case by case management in such cases.
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Affiliation(s)
- Tony Eid
- Orthopedic Surgery Department, Hotel-Dieu de France Hospital, Beirut, Lebanon.
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Abstract
Background Solitary fibrous tumor of the pleura is a rare, usually benign, and slow-growing neoplasm. Complete surgical resection for giant tumor of the pleura is challenging because of poor exposure and a large blood supply. We report the case of a giant hypervascular fibrous tumor that filled nearly the entire left hemithorax and anterior mediastinum, and its preoperative management. Case Report: A 59-year-old woman presented to us with exertional dyspnea and chest pain. A chest radiograph showed the right hemithorax completely opaque and a mediastinal shift to the left hemithorax. A tomography scan of the thorax showed a giant mass that almost completely filled the right hemithorax and compressed the mediastinum to the left. Because of excessive bleeding during dissection, the operation was terminated after a biopsy specimen was obtained. The biopsy was diagnosed as a benign fibrous tumour. A thoracic computed tomography angiogram showed that the mass was supplied by multiple intercostal arteries as well as an aberrant artery that branches off the celiac trunk in the subdiaphragmatic region. Due to the many arteries that needed to be embolized, the final decision was to control the bleeding following resection by inducing total circulatory arrest with the help of cardiopulmonary bypass. The bleeding could not be controlled under cardiopulmonary bypass and the patient’s death was confirmed. Conclusions: We report this case to emphasize the necessity of preoperative embolization; the use of cardiopulmonary bypass and total circulatory arrest is not a valid alternative method to control the bleeding.
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Affiliation(s)
- Bülent Aydemir
- Siyami Ersek Cardiothoracic Surgery Training Hospital, Istanbul, Turkey
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Abstract
Astrocytes respond to all forms of CNS insult and disease by becoming reactive, a nonspecific but highly characteristic response that involves various morphological and molecular changes. Probably the most recognized aspect of reactive astrocytes is the formation of a glial scar that impedes axon regeneration. Although the reactive phenotype was first suggested more than 100 years ago based on morphological changes, the remodeling process is not well understood. We know little about the actual structure of a reactive astrocyte, how an astrocyte remodels during the progression of an insult, and how populations of these cells reorganize to form the glial scar. New methods of labeling astrocytes, along with transgenic mice, allow the complete morphology of reactive astrocytes to be visualized. Recent studies show that reactivity can induce a remarkable change in the shape of a single astrocyte, that not all astrocytes react in the same way, and that there is plasticity in the reactive response.
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Affiliation(s)
- Daniel Sun
- 1Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA.
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Homeag M, Enachescu V, Pavel LE, Zaharia B, Manescu N. Pseudomyxoma peritonei. Curr Health Sci J 2009; 35:193-6. [PMID: 24778820 PMCID: PMC3945247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Accepted: 05/14/2009] [Indexed: 12/04/2022]
Abstract
The authors report a case of a 60 years old Romanian male with peritoneal pseudomyxoma that was discovered to have a primary location in the greater omentum. Pseudomyxoma peritonei arising into the greater omentum is very rare. It is an original case report and the new data represents a well-balanced summary of a timely subject, with reference to the literature. This it is a significantly advance in our understanding of a particular disease etiology. Until now, only a few primary greater omentum pseudomyxoma peritonei have been described. Clinical and pathologic findings of this case are presented and the topic of primary location in the great omentum of pseudomyxoma peritonei was reviewed. Preoperative ultrasound examination showed the presence of an "eyes of net" tumoral-mass formation, in the greater omentum, and a fluid collection was found in the abdomen (Morrison space and the pouch of Douglas). Notwithstanding, diagnosis of pseudomyxoma was preoperatively considered less probable due to the rarity of the affection and the advanced age. During laparotomy, the presence of the large mass observed at the ultrasound examination was revealed. Mucinous ascites was present with invasive mucinous implants in the peritoneum and in the greater omentum. Operation consisted in the total removal of the mass followed by evacuation of the mucinous ascites. Histological examination confirmed the clinical diagnosis of pseudomyxoma peritonei.
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Affiliation(s)
- Maria Homeag
- Department of Internal Medicine, University of Medicine and Pharmacy, Craiova
| | - Viorela Enachescu
- Department of Internal Medicine, University of Medicine and Pharmacy, Craiova
| | - Luci Elena Pavel
- Department of Internal Medicine, University of Medicine and Pharmacy, Craiova
| | - B. Zaharia
- Department of Pathology, Emergency University Hospital, Craiova
| | - N. Manescu
- Department of General Surgery, University of Medicine and Pharmacy, Craiova
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Abstract
Mesenchymal tumors of the bladder are rare with leiomyoma accounting for most of these. We present a rare case of a bladder benign fibrous histiocytoma in a 52-year-old male. He presented with history of straining during micturition since two years. The magnetic resonance imaging revealed a large intravesical mass. The mass was excised. It weighed 600g, with a maximum dimension of 13cm. Histology was that of a benign fibrous histiocytoma. To our knowledge, only two cases of this tumor have been reported in the bladder so far. The clinical and pathological features are discussed.
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