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Pai V, Muthusami P, Ertl-Wagner B, Shroff MM, Parra-Fariñas C, Sainani K, Kletke S, Brundler MA, Mallipatna A. Diagnostic Imaging for Retinoblastoma Cancer Staging: Guide for Providing Essential Insights for Ophthalmologists and Oncologists. Radiographics 2024; 44:e230125. [PMID: 38451848 DOI: 10.1148/rg.230125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Retinoblastoma is the most common cause of all intraocular pediatric malignancies. It is caused by the loss of RB1 tumor suppressor gene function, although some tumors occur due to MYCN oncogene amplification with normal RB1 genes. Nearly half of all retinoblastomas occur due to a hereditary germline RB1 pathogenic variant, most of which manifest with bilateral tumors. This germline RB1 mutation also predisposes to intracranial midline embryonal tumors. Accurate staging of retinoblastoma is crucial in providing optimal vision-, eye-, and life-saving treatment. The AJCC Cancer Staging Manual has undergone significant changes, resulting in a universally accepted system with a multidisciplinary approach for managing retinoblastoma. The authors discuss the role of MRI and other diagnostic imaging techniques in the pretreatment assessment and staging of retinoblastoma. A thorough overview of the prevailing imaging standards and evidence-based perspectives on the benefits and drawbacks of these techniques is provided. Published under a CC BY 4.0 license. Test Your Knowledge questions for this article are available in the supplemental material.
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Affiliation(s)
- Vivek Pai
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Prakash Muthusami
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Birgit Ertl-Wagner
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Manohar M Shroff
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Carmen Parra-Fariñas
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Kanchan Sainani
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Stephanie Kletke
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Marie-Anne Brundler
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
| | - Ashwin Mallipatna
- From the Divisions of Neuroradiology (V.P., P.M., B.E.W., M.M.S., C.P.F.) and Image Guided Therapy (P.M., M.M.S., C.P.F.), Department of Diagnostic Imaging, and Retinoblastoma Program, Department of Ophthalmology and Vision Sciences (K.S., S.K., A.M.), The Hospital for Sick Children (SickKids), University of Toronto, 555 University Ave, Toronto, ON, Canada M5G 1X8; and Department of Pathology and Department of Laboratory Medicine and Pediatrics, Cumming School of Medicine, Calgary, Alberta, Canada (M.A.B.)
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Jabbarli L, Göricke S, Stumbaum P, Rating P, Lever M, Kiefer T, Ting S, Junker A, Bornfeld N, Schoenberger S, Bechrakis NE, Ketteler P, Biewald E. Preoperative Detection of Local Tumor Extent in Patients with Advanced Retinoblastoma: Predictive Value of MRI and Clinical Findings. Klin Monbl Augenheilkd 2023. [PMID: 38134910 DOI: 10.1055/a-2198-7630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
OBJECTIVE Before planned enucleation, local tumor extension in advanced retinoblastoma is routinely assessed preoperatively using high-resolution magnetic resonance imaging (MRI). The aim of our study was to analyse the predictive value of MRI and clinical characteristics for predicting tumor extent, as confirmed by histopathology postoperatively. PATIENTS AND METHODS All consecutive patients were included who underwent primary enucleation for advanced retinoblastoma after high-resolution MRI examination in our hospital between January 2011 and December 2021. The primary study endpoint was the evaluation of the predictability of histopathological risk factors on preoperative MRI examination. The sensitivity and specificity of the MRI examination with respect to clinically relevant optic nerve infiltration and choroidal infiltration were determined. RESULTS The mean age of the 209 included patients was 1.6 years (range 1 month to 4.7 years). MRI indicated optic nerve infiltration in 46 (22%) patients, extensive choroidal infiltration in 78 (40.2%) patients, and scleral infiltration in one patient (2.6%). Histopathological examination demonstrated postlaminar optic infiltration in 25 (12%) patients and extensive choroidal infiltration in 17 (8.1%) cases. Scleral infiltration was evident in 8 (3.8%) patients. In the final multivariate analysis, MRI findings of tumor infiltration and a preoperative intraocular pressure ≥ 20 mmHg were independently associated with histopathological evidence of clinically relevant optic nerve (p = 0.033/p = 0.011) and choroidal infiltration (p = 0.005/p = 0.029). The diagnostic accuracy of the prediction models based on the multivariate analysis for the identification of the clinically relevant optic nerve (AUC = 0.755) and choroidal infiltration (AUC = 0.798) was greater than that of purely MRI-based prediction (respectively 0.659 and 0.742). The sensitivity and specificity of MRI examination for determining histopathological risk factors in our cohort were 64% and 65% for clinically relevant optic infiltration and 87% and 64% for clinically relevant choroidal infiltration. CONCLUSION The local tumor extent of retinoblastoma with infiltration of the optic nerve and choroid can be well estimated based on radiological and clinical characteristics before treatment initiation. The combination of clinical and radiological risk factors supports the possibility of early treatment stratification in retinoblastoma patients.
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Affiliation(s)
- Leyla Jabbarli
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
| | - Sophia Göricke
- Institut für Diagnostische und Interventionelle Radiologie und Neuroradiologie, Universitätsklinikum Essen, Deutschland
| | - Paulina Stumbaum
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
| | - Philipp Rating
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
| | - Mael Lever
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
| | - Tobias Kiefer
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
| | - Saskia Ting
- Institut für Pathologie Nordhessen, Gesundheit Nordhessen Holding AG, Kassel, Deutschland
| | - Andreas Junker
- Institut für Neuropathologie, Universitätsklinikum Essen, Deutschland
| | - Norbert Bornfeld
- Facharztzentrum für Augenheilkunde, Düsseldorf, Universität Duisburg-Essen, Duisburg, Deutschland
| | | | | | - Petra Ketteler
- Klinik für pädiatrische Hämatologie und Onkologie, Universitätsklinikum Essen, Deutschland
| | - Eva Biewald
- Klinik für Augenheilkunde, Universitätsklinikum Essen, Deutschland
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Zhu X, Li Z, Liu J, Guo J, Xian J, Wu J. MRI features for prediction of the intravenous chemotherapy effect in patients with retinoblastoma. Clin Radiol 2023; 78:e864-e871. [PMID: 37596180 DOI: 10.1016/j.crad.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/07/2023] [Accepted: 07/17/2023] [Indexed: 08/20/2023]
Abstract
AIM To investigate the value of orbital magnetic resonance imaging (MRI) features in predicting the efficacy of intravenous chemotherapy (IVC) for patients with retinoblastoma (RB). MATERIALS AND METHODS The pretreatment clinical and MRI data of 100 eyes from 80 RB patients who underwent IVC were collected retrospectively. There were 59 eyes in the effective group and 41 eyes in the ineffective group, and the baseline data of the two groups were compared statistically. Three radiologists reviewed and evaluated each lesion independently based on 25 MRI features. The predictive values of the MRI features for IVC efficacy were assessed by multi-factor logistic regression analysis, and their odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated. Receiver operating characteristic curves (ROCs) with the area under the curve (AUC) were used to determine the predictive abilities. A predictive model was constructed by integrating all independent predictors visualised by the nomogram. RESULTS There were no statistically significant differences in sex or age between the effective and ineffective groups. The results of multivariate regression analysis showed that laterality, margin, and anterior eye segment enhancement were identified as independent factors that could predict IVC efficacy. The predictive model combining these three features was constructed, and it had an AUC of 0.732 (95% CI: 0.633, 0.831, p<0.01), a sensitivity of 71.2%, and a specificity of 70.7%. CONCLUSION The data demonstrate that the orbital MRI features can be used to predict IVC efficiency before RB patients are treated.
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Affiliation(s)
- X Zhu
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Department of Radiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning, China
| | - Z Li
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - J Liu
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - J Guo
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - J Xian
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
| | - J Wu
- Department of Radiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning, China.
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Sun J, Gan L, Ding J, Ma R, Qian J, Xue K. Identification of non-coding RNAs and their functional network associated with optic nerve invasion in retinoblastoma. Heliyon 2023; 9:e13813. [PMID: 36852072 PMCID: PMC9958441 DOI: 10.1016/j.heliyon.2023.e13813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Optic nerve invasion (ONI) is an important high-risk feature and prognostic indicator of retinoblastoma (RB). Emerging evidence has revealed that non-coding RNAs (ncRNAs) play important roles in tumor perineural invasion (PNI). Nevertheless, the regulatory role of ncRNAs in the ONI of RB is poorly understood. In the current study, whole-transcriptome sequencing was performed to assess the expression profiles of ncRNAs and mRNAs in RB tissues, with or without ONI. Based on Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses, we predicted the biological functions of differentially expressed (DE) mRNAs. We then constructed competing endogenous RNA (ceRNA) regulatory networks based on bioinformatics analysis. The hsa_circ_0015965/lncRNA MEG3-hsa-miR-378a-5p-NOTCH1 pathway was selected and validated by real-time qPCR, western blotting, and dual luciferase reporter assays. Moreover, we demonstrated that NOTCH1 promotes the malignant progression of RB. Taken together, our results provide novel insights into the mechanism underlying optic nerve invasion in RB.
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Affiliation(s)
- Jie Sun
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
| | - Lu Gan
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
| | - Jie Ding
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
| | - Ruiqi Ma
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
| | - Jiang Qian
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
| | - Kang Xue
- Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai, 200031, China
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Wang N, Liu R, Li J, Wang J, Xu L, Guo Q, Zhang X, Ma J. Long-term efficacy of enucleation combined with primary orbital implantation in children with retinoblastoma histopathological invasion of optic nerve. Front Neurol 2022; 13:1013523. [PMID: 36299272 PMCID: PMC9588964 DOI: 10.3389/fneur.2022.1013523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
Objective This study aimed to observe the long-term effect of enucleation combined with primary orbital implantation in children with histopathologic optic nerve invasive retinoblastoma (RB). Methods We retrospectively analyzed the clinical data and outcomes of children with RB optic nerve invasion confirmed by histopathology who underwent enucleation combined with primary orbital implantation between March 2010 and April 2014 in Beijing Tongren Hospital. The follow-up time ranged from 81 to 129 months, with a mean follow-up of 96 ± 14 months. Results A total of 59 children were included in this study. There were 32 males and 27 females; 52 children were affected in one eye and seven children in both eyes. The time from onset of symptoms to visit was between 3 days and 16 months, with a mean of 2.2 ± 2.8 months. The age at the of surgery was between 2 and 65 months, with an average of 24 ± 13 months. Patients were classified based on the degree of optic nerve invasion into four grades: grade 1 (invasion of prelaminar) in 28 cases, grade 2 (invasion of laminar) in 14 cases, grade 3 (invasion of retrolaminar but not reaching the optic nerve transection) in 16 cases, and grade 4 (invasion of the optic nerve transection) in 1 case. Post-operatively, all children were treated with 0–9 cycles of intravenous chemotherapy based on histopathology results from the removed eye. Of the 59 children, 13 had postoperative complications, and one died from recurrence. The survival rate was 98% (58/59). There was one case of orbital implant exposure, one of orbital cellulitis, six of enophthalmos and superior sulcus deformity, two of blepharoptosis, one of granuloma complicated with blepharoptosis, and one with a subconjunctival cyst. Conclusion For children with RB histopathologic invasion of the optic nerve, enucleation combined with primary orbital implantation reveals future potential treatment options when combined with a full course of intravenous chemotherapy.
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Affiliation(s)
- Nan Wang
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Rui Liu
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jing Li
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jinjin Wang
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Liangyuan Xu
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qihan Guo
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xuan Zhang
- Tai'an City Central Hospital, Qingdao University, Tai'an, China
| | - Jianmin Ma
- Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- *Correspondence: Jianmin Ma
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Liu J, Xu X, Yan J, Guo J, Wang X, Xian J. Diffusion‐Weighted
MR
Imaging of the Optic Nerve Can Improve the Detection of Post‐Laminar Optic Nerve Invasion from Retinoblastoma. J Magn Reson Imaging 2022; 57:1587-1593. [PMID: 36106682 DOI: 10.1002/jmri.28429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/30/2022] [Accepted: 08/30/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Post-laminar optic nerve invasion (PLONI) is a high-risk factor for the metastasis of retinoblastoma (RB). Unlike conventional MRI, diffusion-weighted imaging (DWI) reflects histopathological features, and may aid the assessment of PLONI. PURPOSE To determine the value of conventional MRI plus DWI in detecting PLONI in RB patients. STUDY TYPE Retrospective. POPULATION Eighty-three RB patients, including 28 with histopathologically proven PLONI and 55 without PLONI. FIELD STRENGTH/SEQUENCE 3.0 T, precontrast axial T1-weighted and T2-weighted imaging, DWI, and postcontrast axial, coronal, and oblique-sagittal T1-weighted imaging. ASSESSMENT PLONI was assessed using post-enucleation histology and preoperative MRI features (optic nerve signal intensity, enlargement, and enhancement on conventional MRI, and apparent diffusion coefficient [ADC] of the optic nerve on DWI) evaluated by three observers. STATISTICAL TESTS MRI features suggesting the presence of PLONI were identified using univariable and multivariable analyses. Receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to analyze diagnostic performance. RESULTS Optic nerve enhancement and low ADC of the optic nerve were significant indicators of PLONI. ROC curve analysis showed that the AUC of the combination of these two features for detecting PLONI was 0.87 (95% confidence interval [CI]: 0.78-0.93). The diagnostic performance of this model was significantly superior to that of optic nerve enhancement alone (0.76, 95% CI: 0.65-0.85) and marginally superior to that of the ADC of the affected optic nerve (0.78, 95% CI: 0.68-0.87, P = 0.051). DATA CONCLUSION Conventional MRI combined with DWI can improve the detection of PLONI in RB patients over conventional MRI alone. EVIDENCE LEVEL 3 Technical Efficacy: Stage 2.
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Affiliation(s)
- Jing Liu
- Department of Radiology Beijing Tongren Hospital, Capital Medical University Beijing China
- Dongfang Hospital, Beijing University of Chinese Medicine Beijing China
| | - Xiaolin Xu
- Institute of Ophthalmology, Beijing Tongren Eye Center Beijing Tongren Hospital, Capital Medical University Beijing China
| | - Jing Yan
- Dongfang Hospital, Beijing University of Chinese Medicine Beijing China
| | - Jian Guo
- Department of Radiology Beijing Tongren Hospital, Capital Medical University Beijing China
| | - XinYan Wang
- Department of Radiology Beijing Tongren Hospital, Capital Medical University Beijing China
| | - Junfang Xian
- Department of Radiology Beijing Tongren Hospital, Capital Medical University Beijing China
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Li Z, Guo J, Xu X, Wei W, Xian J. MRI-based radiomics model can improve the predictive performance of postlaminar optic nerve invasion in retinoblastoma. Br J Radiol 2022; 95:20211027. [PMID: 34826253 PMCID: PMC8822570 DOI: 10.1259/bjr.20211027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES To develop an MRI-based radiomics model to predict postlaminar optic nerve invasion (PLONI) in retinoblastoma (RB) and compare its predictive performance with subjective radiologists' assessment. METHODS We retrospectively enrolled 124 patients with pathologically proven RB (90 in training set and 34 in validation set) who had MRI scans before surgery. A radiomics model for predicting PLONI was developed by extracting quantitative imaging features from axial T2W images and contrast-enhanced T1W images in the training set. The Kruskal-Wallis test, least absolute shrinkage and selection operator regression, and recursive feature elimination were used for feature selection, where upon a radiomics model was built with a logistic regression (LR) classifier. The area under the curve (AUC) of the receiver operating characteristic (ROC) curve and the accuracy were assessed to evaluate the predictive performance in the training and validation set. The performance of the radiomics model was compared to radiologists' assessment by DeLong test. RESULTS The AUC of the radiomics model for the prediction of PLONI was 0.928 in the training set and 0.841 in the validation set. Radiomics model produced better sensitivity than radiologists' assessment (81.1% vs 43.2% in training set, 82.4vs 52.9% in validation set). In all 124 patients, the AUC of the radiomics model was 0.897, while that of radiologists' assessment was 0.674 (p < 0.001, DeLong test). CONCLUSION MRI-based radiomics model to predict PLONI in RB patients was shown to be superior to visual assessment with improved sensitivity and AUC, and may serve as a potential tool to guide personalized treatment.
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Affiliation(s)
- Zhenzhen Li
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, No. 1 of Dongjiaominxiang, Dongcheng District, Beijing, China
- Clinical Center for Eye Tumors, Capital Medical University, Beijing, China
| | - Jian Guo
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, No. 1 of Dongjiaominxiang, Dongcheng District, Beijing, China
- Clinical Center for Eye Tumors, Capital Medical University, Beijing, China
| | - Xiaolin Xu
- Clinical Center for Eye Tumors, Capital Medical University, Beijing, China
- Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Key Laboratory of Intraocular Tumor Diagnosis and Treatment, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Wenbin Wei
- Clinical Center for Eye Tumors, Capital Medical University, Beijing, China
- Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Key Laboratory of Intraocular Tumor Diagnosis and Treatment, Beijing Ophthalmology & Visual Sciences Key Lab, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Junfang Xian
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, No. 1 of Dongjiaominxiang, Dongcheng District, Beijing, China
- Clinical Center for Eye Tumors, Capital Medical University, Beijing, China
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Li XN, Hao DP, Qu MJ, Zhang M, Ma AB, Pan XD, Ma AJ. Development and Validation of a Plasma FAM19A5 and MRI-Based Radiomics Model for Prediction of Parkinson's Disease and Parkinson's Disease With Depression. Front Neurosci 2022; 15:795539. [PMID: 34975391 PMCID: PMC8718551 DOI: 10.3389/fnins.2021.795539] [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: 10/15/2021] [Accepted: 11/26/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Prediction and early diagnosis of Parkinson’s disease (PD) and Parkinson’s disease with depression (PDD) are essential for the clinical management of PD. Objectives: The present study aimed to develop a plasma Family with sequence similarity 19, member A5 (FAM19A5) and MRI-based radiomics nomogram to predict PD and PDD. Methods: The study involved 176 PD patients and 181 healthy controls (HC). Sandwich enzyme-linked immunosorbent assay (ELISA) was used to measure FAM19A5 concentration in the plasma samples collected from all participants. For enrolled subjects, MRI data were collected from 164 individuals (82 in the PD group and 82 in the HC group). The bilateral amygdala, head of the caudate nucleus, putamen, and substantia nigra, and red nucleus were manually labeled on the MR images. Radiomics features of the labeled regions were extracted. Further, machine learning methods were applied to shrink the feature size and build a predictive radiomics signature. The resulting radiomics signature was combined with plasma FAM19A5 concentration and other risk factors to establish logistic regression models for the prediction of PD and PDD. Results: The plasma FAM19A5 levels (2.456 ± 0.517) were recorded to be significantly higher in the PD group as compared to the HC group (2.23 ± 0.457) (P < 0.001). Importantly, the plasma FAM19A5 levels were also significantly higher in the PDD subgroup (2.577 ± 0.408) as compared to the non-depressive subgroup (2.406 ± 0.549) (P = 0.045 < 0.05). The model based on the combination of plasma FAM19A5 and radiomics signature showed excellent predictive validity for PD and PDD, with AUCs of 0.913 (95% CI: 0.861–0.955) and 0.937 (95% CI: 0.845–0.970), respectively. Conclusion: Altogether, the present study reported the development of nomograms incorporating radiomics signature, plasma FAM19A5, and clinical risk factors, which might serve as potential tools for early prediction of PD and PDD in clinical settings.
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Affiliation(s)
- Xue-Ning Li
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Da-Peng Hao
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mei-Jie Qu
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Meng Zhang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - An-Bang Ma
- Shanghai Xunshi Technology Co., Ltd., Shanghai, China
| | - Xu-Dong Pan
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Cerebrovascular, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ai-Jun Ma
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Cerebrovascular, The Affiliated Hospital of Qingdao University, Qingdao, China
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Deike-Hofmann K, von Lampe P, Eerikaeinen M, Ting S, Schlüter S, Schlemmer HP, Bechrakis NE, Forsting M, Radbruch A. Anterior chamber enhancement predicts optic nerve infiltration in retinoblastoma. Eur Radiol 2022; 32:7354-7364. [PMID: 35524782 PMCID: PMC9668776 DOI: 10.1007/s00330-022-08778-4] [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: 09/02/2021] [Revised: 03/15/2022] [Accepted: 03/26/2022] [Indexed: 01/03/2023]
Abstract
OBJECTIVES As described recently, intravenously injected gadolinium-based contrast agent (GBCA) penetrates into the anterior eye chamber (AC) and is drained from the retina to the distal optic nerve (ON) along perivascular spaces, which serves retinal homeostasis and was termed the orbital glymphatic system (GS). Independently, AC enhancement predicted ON infiltration, a major risk factor for advanced retinoblastoma (RB), in a small RB patient cohort. We aimed to review the supposed imaging biomarker for ON infiltration in a large RB cohort and with respect to the recently described orbital GS. METHODS This IRB-approved retrospective single-center study encompassed 539 orbital MRIs performed with an orbital coil and with the children under general anesthesia. Differences of signal intensity ratios (∆SIRs) of the AC to the lens were determined between non-contrast and GBCA-enhanced T1-weighted images and were correlated with histopathologic presence of ON infiltration. RESULTS ∆SIR of the RB eye was an independent, significant predictor for ON invasion in multivariate analysis with adjustment for tumor size (p < 0.05) and increased with infiltration level. CONCLUSIONS GBCA enhancement of the AC predicts ON infiltration. This might be caused by impairment of the orbital glymphatic system, which is supposed to clear toxic metabolites from the retina to the postlaminar ON. In RB with ON infiltration, this efflux path is likely to be inhibited, which is supposed to result in disturbed retinal homeostasis, release of vascular endothelial growth factor, and iris neovascularization, which increases penetration of GBCA into the AC. KEY POINTS • Infiltration of the optic nerve can be predicted by anterior chamber enhancement after intravenous MRI contrast agent administration. • Increased anterior chamber enhancement in retinoblastoma with optic nerve infiltration might result from dysfunction of the orbital glymphatic system with disturbance of retinal homeostasis and consecutive iris neovascularization.
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Affiliation(s)
- Katerina Deike-Hofmann
- Department of Radiology, German Cancer Research Center, DKFZ, Heidelberg, Germany ,Department of Neuroradiology, University Hospital Bonn, Bonn, Germany ,Clinical Neuroimaging Group, German Center for Neurodegenerative Diseases, DZNE, Bonn, Germany
| | - Paula von Lampe
- Department of Radiology, University Hospital Essen, Essen, Germany
| | | | - Saskia Ting
- Department of Pathology, University Hospital Essen, Essen, Germany
| | - Sabrina Schlüter
- Department of Ophthalmology, University Hospital Essen, Essen, Germany
| | | | | | - Michael Forsting
- Department of Radiology, University Hospital Essen, Essen, Germany
| | - Alexander Radbruch
- Department of Neuroradiology, University Hospital Bonn, Bonn, Germany ,Clinical Neuroimaging Group, German Center for Neurodegenerative Diseases, DZNE, Bonn, Germany
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10
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Lu H, Zhang Z, Lu Y, Xiu W, Cui J. LncRNA NEAT1 Acts as an miR-148b-3p Sponge to Regulate ROCK1 Inhibition of Retinoblastoma Growth. Cancer Manag Res 2021; 13:5587-5597. [PMID: 34285579 PMCID: PMC8285126 DOI: 10.2147/cmar.s271326] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/15/2020] [Indexed: 01/26/2023] Open
Abstract
Background It is reported that long non-coding RNA nuclear paraspeckle assembly transcript 1 (LncRNA NEAT1) is involved in the occurrence and development of various cancers. However, the detailed biological function and mechanism of LncRNA NEAT1 in retinoblastoma are still unclear. So we will explore the biological function and possible mechanism of LncRNA NEAT1 in retinoblastoma. Materials and Methods Quantitative real-time PCR (qRT-PCR) was used to detect LncRNA NEAT1 in retinoblastoma tissues and cell lines. Cell counting kit 8, Transwell and flow cytometry were applied to explore cell proliferation, invasion and apoptosis. The target miRNAs (miR) of LncRNA NEAT1 and miR and downstream target genes were predicted using Starbase3.0 software and confirmed by double luciferase reporting test and RNA binding protein immunoprecipitation (RIP). Western Blot was applied to explore ROCK1 in cells, and tumor allogeneic experiment was applied to study the role of LncRNA NEAT1 on tumor growth. Results It was found that LncRNA NEAT1 was up-regulated in retinoblastoma tissues, cells and serum, and the prognosis of patients with high expression of LNC RNA NEAT 1 was poor. Functional analysis showed that knocking down LncRNA NEAT1 could weaken proliferation and invasion, and accelerate apoptosis. Tumor allogeneic experiment showed that sh-NEAT1 injection can inhibit tumor growth. In addition, LncRNA NEAT1 inhibited proliferation and invasion, and promoted apoptosis through miR-148b-3p/ROCK1 axis. Conclusion LncRNA NEAT1 can mediate miR-148b-3p/ROCK1 axis to weaken the proliferation and invasion of retinoblastoma.
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Affiliation(s)
- Hang Lu
- Research Center of Ophthalmology, The First Hospital of Qiqihar, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang Province, People's Republic of China
| | - Zhenjun Zhang
- Ophthalmology Department, Beiman Hongpeng Hospital of Qiqihar, Qiqihar, Heilongjiang Province, People's Republic of China
| | - Yao Lu
- International Education College, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang Province, People's Republic of China
| | - Weiwei Xiu
- Research Center of Ophthalmology, The First Hospital of Qiqihar, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang Province, People's Republic of China
| | - Jinglin Cui
- Research Center of Ophthalmology, The First Hospital of Qiqihar, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang Province, People's Republic of China
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11
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Current Indications of Secondary Enucleation in Retinoblastoma Management: A Position Paper on Behalf of the European Retinoblastoma Group (EURbG). Cancers (Basel) 2021; 13:cancers13143392. [PMID: 34298608 PMCID: PMC8303810 DOI: 10.3390/cancers13143392] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Although secondary enucleation (SE) is the treatment of choice for retinoblastoma eyes that did not respond favorably to conservative therapies, clear criteria for its indication are, however, currently missing. In this position paper on behalf of the European Retinoblastoma Group (EURbG), we discuss the available literature on SE, including its influence on metastases rate and survival, and propose guidelines to assist decision-making to interrupt eye-preserving therapies depending on the availabilities of advanced diagnostic and therapeutic modalities. Absolute indications to SE may be restricted to eyes with refractory tumor activity resisting all salvage treatments or eyes under apparent tumor control but no visual potential and irreducible complications. In contrast, eyes with an obscured optic nerve head and/or ocular complications amenable to specific surgical or medical management can be considered relative indications, provided that appropriate follow-up can be implemented and that parents are fully aware of a residual risk. Abstract Secondary enucleation (SE) puts an irreversible end to eye-preserving therapies, whenever their prolongation is expected to violate the presumed state of metastatic grace. At present, it must be acknowledged that clear criteria for SE are missing, leading to empiric and subjective indications commonly related to disease progression or relapse, disease persistence masking the optic nerve head or treatment-related complications obscuring the fundus view. This absence of evidence-based consensus regarding SE is explained by the continuously moving frontiers of the conservative management as a result of diagnostic and therapeutic advances, as well as by the lack of studies sufficiently powered to accurately stratify the risk of metastasis in conservatively treated patients. In this position paper of the European Retinoblastoma Group (EURbG), we give an overview of the progressive shift in the indications for SE over the past decades and propose guidelines to assist decision-making with respect to when SE becomes imperative or recommended, with corresponding absolute and relative SE indications. Further studies and validation of biologic markers correlated with the risk of metastasis are expected to set more precisely the frontiers of conservative management and thus consensual criteria for SE in the future.
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12
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Arshad R, Barani M, Rahdar A, Sargazi S, Cucchiarini M, Pandey S, Kang M. Multi-Functionalized Nanomaterials and Nanoparticles for Diagnosis and Treatment of Retinoblastoma. BIOSENSORS 2021; 11:97. [PMID: 33810621 PMCID: PMC8066896 DOI: 10.3390/bios11040097] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022]
Abstract
Retinoblastoma is a rare type of cancer, and its treatment, as well as diagnosis, is challenging, owing to mutations in the tumor-suppressor genes and lack of targeted, efficient, cost-effective therapy, exhibiting a significant need for novel approaches to address these concerns. For this purpose, nanotechnology has revolutionized the field of medicine with versatile potential capabilities for both the diagnosis, as well as the treatment, of retinoblastoma via the targeted and controlled delivery of anticancer drugs via binding to the overexpressed retinoblastoma gene. Nanotechnology has also generated massive advancements in the treatment of retinoblastoma based on the use of surface-tailored multi-functionalized nanocarriers; overexpressed receptor-based nanocarriers ligands (folate, galactose, and hyaluronic acid); lipid-based nanocarriers; and metallic nanocarriers. These nanocarriers seem to benchmark in mitigating a plethora of malignant retinoblastoma via targeted delivery at a specified site, resulting in programmed apoptosis in cancer cells. The effectiveness of these nanoplatforms in diagnosing and treating intraocular cancers such as retinoblastoma has not been properly discussed, despite the increasing significance of nanomedicine in cancer management. This article reviewed the recent milestones and future development areas in the field of intraocular drug delivery and diagnostic platforms focused on nanotechnology.
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Affiliation(s)
- Rabia Arshad
- Department of Pharmacy, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Mahmood Barani
- Department of Chemistry, ShahidBahonar University of Kerman, Kerman 76169-14111, Iran;
| | - Abbas Rahdar
- Department of Physics, Faculty of Science, University of Zabol, Zabol 98613-35856, Iran
| | - Saman Sargazi
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran;
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, 66421 Homburg/Saar, Germany;
| | - Sadanand Pandey
- Department of Chemistry, College of Natural Science, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea
- Particulate Matter Research Center, Research Institute of Industrial Science & Technology (RIST), 187-12, Geumho-ro, Gwangyang-si 57801, Korea
| | - Misook Kang
- Department of Chemistry, College of Natural Science, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea
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13
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Silvera VM, Guerin JB, Brinjikji W, Dalvin LA. Retinoblastoma: What the Neuroradiologist Needs to Know. AJNR Am J Neuroradiol 2021; 42:618-626. [PMID: 33509920 DOI: 10.3174/ajnr.a6949] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022]
Abstract
Retinoblastoma is the most common primary intraocular tumor of childhood. Accurate diagnosis at an early stage is important to maximize patient survival, globe salvage, and visual acuity. Management of retinoblastoma is individualized based on the presenting clinical and imaging features of the tumor, and a multidisciplinary team is required to optimize patient outcomes. The neuroradiologist is a key member of the retinoblastoma care team and should be familiar with characteristic diagnostic and prognostic imaging features of this disease. Furthermore, with the adoption of intra-arterial chemotherapy as a standard of care option for globe salvage therapy in many centers, the interventional neuroradiologist may play an active role in retinoblastoma treatment. In this review, we discuss the clinical presentation of retinoblastoma, ophthalmic imaging modalities, neuroradiology imaging features, and current treatment options.
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Affiliation(s)
- V M Silvera
- From the Departments of Neuroradiology (V.M.S., J.B.G., W.B.)
| | - J B Guerin
- From the Departments of Neuroradiology (V.M.S., J.B.G., W.B.)
| | - W Brinjikji
- From the Departments of Neuroradiology (V.M.S., J.B.G., W.B.).,Neurosurgery (W.B.)
| | - L A Dalvin
- Ophthalmology (L.A.D.), Mayo Clinic, Rochester, Minnesota
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14
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Abusayf MM, Alkatan HM, Elkhamary S, Almesfer SA, Maktabi AMY. Histopathological assessment of optic nerve invasion guided by radiological findings in enucleated globes with retinoblastoma. BMC Ophthalmol 2020; 20:386. [PMID: 32993566 PMCID: PMC7526200 DOI: 10.1186/s12886-020-01654-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/11/2020] [Indexed: 11/25/2022] Open
Abstract
Background Optic nerve (ON) invasion is an important high-risk feature, and an indicator for neoadjuvant chemotherapy and prognosis. We aim through this study to correlate the detected-ON invasion by Magnetic resonance imaging (MRI) with the corresponding confirmed histopathological level of invasion. Methods A retrospective study of enucleated globes with the diagnosis of retinoblastoma received in the histopathology department(s) from January 2015 to December 2016 (2 years). Slides were reviewed for ON invasion assessment, charts were reviewed for basic demographic data. All patients underwent MRI under sedation upon diagnosis and MRI findings were collected for the above correlation. Results A total of 38 patients were included: 21 males and 17 females. 29 (77.3%) had unilateral involvement, 7 (18.4%) had bilateral involvement and 2 cases had trilateral disease. The overall mean age at diagnosis was 22.63 ± 15.15 months. Histopathological examination revealed ON invasion in 28 cases (74%) distributed as follows: prelaminar (31.6%), laminar (18.4%), and post-laminar (23.7%). MRI confirmed post-laminar ON invasion in 8 cases (true positive) but failed to detect this in 1 case. Additionally, MRI detected another 8 cases of ON invasion that were false positive on histopathology (accuracy: 63.3%; sensitivity: 88.9%; specificity: 72.4%; Positive predictive value (PPV): 50%; Negative predictive value (NPV): 95.5%). Conclusions MRI is found to be less sensitive in evaluating prelaminar and laminar ON invasion (0.0 and 42.9%) compared to post-laminar invasion (88.9%). MRI has generally better specificity in detecting ON invasion irrespective of the invasion level. In our study, obtaining deeper and/or additional histologic sections from the other surface of the tissue block in cases where a post-laminar ON invasion by MRI is found but not confirmed histopathologically in routine sections is essential to avoid missing such an important high-risk feature.
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Affiliation(s)
- Mohammed M Abusayf
- Department of Ophthalmology, College of Medicine, King Saud University, PO Box 18097, Riyadh, postal code 11415, Saudi Arabia
| | - Hind M Alkatan
- Department of Ophthalmology, College of Medicine, King Saud University, PO Box 18097, Riyadh, postal code 11415, Saudi Arabia. .,Department of Pathology, College of Medicine, King Saud University Medical City, PO Box 18097, Riyadh, 11415, Saudi Arabia.
| | - Sahar Elkhamary
- Radiology Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.,Diagnostic Radiology Department, Mansoura Faculty of Medicine, Mansoura, Egypt
| | - Saleh A Almesfer
- Pediatric Ophthalmology Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
| | - Azza M Y Maktabi
- Pathology and Laboratory Medicine Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
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15
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Cho SJ, Kim JH, Baik SH, Sunwoo L, Bae YJ, Choi BS. Diagnostic performance of MRI of post-laminar optic nerve invasion detection in retinoblastoma: A systematic review and meta-analysis. Neuroradiology 2020; 63:499-509. [PMID: 32865636 DOI: 10.1007/s00234-020-02538-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/20/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Preoperative MRI detection of post-laminar optic nerve invasion (PLONI) offers guidance in assessing the probability of total tumor resection, an estimation of the extent of surgery, and screening of candidates for eye-preserving therapies or neoadjuvant chemotherapies in the patients with retinoblastoma (RB). The purpose of this systematic review and meta-analysis was to evaluate the diagnostic performance of MRI for detecting PLONI in patients with RB and to demonstrate the factors that may influence the diagnostic performance. METHODS Ovid-MEDLINE and EMBASE databases were searched up to January 11, 2020, for studies identifying the diagnostic performance of MRI for detecting PLONI in patients with RB. The pooled sensitivity and specificity of all studies were calculated followed by meta-regression analysis. RESULTS Twelve (1240 patients, 1255 enucleated globes) studies were included. The pooled sensitivity was 61%, and the pooled specificity was 88%. Higgins I2 statistic demonstrated moderate heterogeneity in the sensitivity (I2 = 72.23%) and specificity (I2 = 78.11%). Spearman correlation coefficient indicated the presence of a threshold effect. In the meta-regression, higher magnetic field strength (3 T than 1.5 T), performing fat suppression, and thinner slice thickness (< 3 mm) were factors causing heterogeneity and enhancing diagnostic power across the included studies. CONCLUSIONS MR imaging was demonstrated to have acceptable diagnostic performance in detecting PLONI in patients with RB. The variation in the magnetic field strength and protocols was the main factor behind the heterogeneity across the included studies. Therefore, there is room for developing and optimizing the MR protocols for patients with RB.
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Affiliation(s)
- Se Jin Cho
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea
| | - Jae Hyoung Kim
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea.
| | - Sung Hyun Baik
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea
| | - Leonard Sunwoo
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea
| | - Yun Jung Bae
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea
| | - Byung Se Choi
- Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, Seongnam, Gyeonggi, 13620, Republic of Korea
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