1
|
Lim JZ, Gokul A, Misra SL, Pan X, Charlton A, McGhee CNJ. An optimized 3T MRI scan protocol to assess iris melanoma with subsequent histopathological verification - A prospective study. Asia Pac J Ophthalmol (Phila) 2024; 13:100047. [PMID: 38417788 DOI: 10.1016/j.apjo.2024.100047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/02/2024] [Accepted: 02/09/2024] [Indexed: 03/01/2024] Open
Abstract
INTRODUCTION Magnetic resonance imaging (MRI) has demonstrated high levels of tissue contrast, accuracy and reproducibility in evaluating posterior uveal melanoma. Owing to smaller size, the role of MRI in detecting and characterising iris melanoma has not yet been explored. AIMS To develop a protocol to image iris melanoma and describe the MRI characteristics of histopathological-confirmed iris melanoma. MATERIALS AND METHODS An optimised MRI protocol, using a 3T MRI scanner and a 32-channel head coil, was developed to image iris tumours. A prospective, single-centre, 12-month study was conducted on all patients with lesions suspicious for iris melanoma. All patients were offered an MRI scan in addition to the standardised clinical procedures. Image quality comparison was made with existing clinical investigations. Iris melanoma characteristics on MRI are described. RESULTS A successful optimised MRI scan protocol was developed that was able to detect and characterise iris melanoma. One normal participant and five patients with subsequent histopathological-confirmed iris melanoma (n = 6) were recruited. Four patients completed the full MRI sequence. All iris melanoma were detected on at least one T1- or T2-weighted images. When compared to the vitreous, all iris melanomas demonstrated hyper-intensity on T1-weighted images and hypo-intensity on T2-weighted images. On T1-mapping, T1-values of iris melanoma demonstrated an inverse relationship with the degree of tumour pigmentation. CONCLUSIONS This study highlights an optimised, easily reproducible MRI scan protocol to image iris melanoma. Numerous MR imaging characteristics of iris melanoma are reported for the first time and a potential non-invasive tumour biomarker is described.
Collapse
Affiliation(s)
- Joevy Z Lim
- Department of Ophthalmology, New Zealand Eye Centre, University of Auckland, New Zealand; Department of Ophthalmology, Te Whatu Ora - Health New Zealand Auckland, New Zealand
| | - Akilesh Gokul
- Department of Ophthalmology, New Zealand Eye Centre, University of Auckland, New Zealand
| | - Stuti L Misra
- Department of Ophthalmology, New Zealand Eye Centre, University of Auckland, New Zealand
| | - Xingzheng Pan
- Department of Physiology, School of Medical Science, New Zealand Eye Centre, University of Auckland, New Zealand
| | - Amanda Charlton
- Department of Histopathology, Te Whatu Ora - Health New Zealand Auckland, New Zealand
| | - Charles N J McGhee
- Department of Ophthalmology, New Zealand Eye Centre, University of Auckland, New Zealand; Department of Ophthalmology, Te Whatu Ora - Health New Zealand Auckland, New Zealand.
| |
Collapse
|
2
|
Sreenivasa S, Wösle M, Gager Y, Vordermark D, Grajewski L, Krause L, Ciernik IF. Impact of tumour volume and treatment delay on the outcome after linear accelerator-based fractionated stereotactic radiosurgery of uveal melanoma. Br J Ophthalmol 2024; 108:457-464. [PMID: 36894300 PMCID: PMC10894830 DOI: 10.1136/bjo-2022-322750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 01/19/2023] [Indexed: 03/11/2023]
Abstract
BACKGROUND/AIMS Primary radiation therapy is used to treat malignant uveal melanoma (UM). We report our single-centre experience with fractionated radiosurgery (fSRS) with a linear accelerator (LINAC) after specific adaptation for small target volumes with HybridArc. METHODS From October 2014 to January 2020, 101 patients referred to Dessau City Hospital with unilateral UM underwent fSRS with 50 Gy given in five fractions on five consecutive days. Primary endpoints were local tumour control, globe preservation, metastasis and death. Potential prognostic features were analysed. Kaplan-Meier analysis, Cox proportional hazards model and linear models were used for calculations. RESULTS The median baseline tumour diameter was 10.0 mm (range, 3.0-20.0 mm), median tumour thickness 5.0 mm (range, 0.9-15.5 mm) and median gross tumour volume (GTV) 0.4 cm³ (range, 0.2-2.6 cm³). After a median follow-up of 32.0 months (range, 2.5-76.0 months), 7 patients (6.9%) underwent enucleation: 4 (4.0%) due to local recurrence and 3 (3.0%) due to radiation toxicities, and 6 patients (5.9%) revealed tumour persistence with a GTV exceeding 1.0 cm³. Of 20 patients (19.8%) who died, 8 (7.9%) were tumour-related deaths. Twelve patients (11.9%) suffered from distant metastasis. GTV showed an impact on all endpoints, and treatment delay was associated with reduced odds of eye preservation. CONCLUSION LINAC-based fSRS with static conformal beams combined with dynamic conformal arcs and discrete intensity-modulated radiotherapy results in a high tumour control rate. The tumour volume is the most robust physical prognostic marker for local control and disease progression. Avoiding treatment delay improves outcomes.
Collapse
Affiliation(s)
- Shanthala Sreenivasa
- Department of Radiation Oncology, Städtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane, Dessau, Germany
| | - Markus Wösle
- Department of Radiation Oncology, Städtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane, Dessau, Germany
| | - Yann Gager
- Department of Research and Development, PathoNext GmbH, Leipzig, Germany
| | - Dirk Vordermark
- Department of Radiation Oncology, Martin Luther Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Luise Grajewski
- Department of Ophthalmology, Städtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane, Dessau, Germany
| | - Lothar Krause
- Department of Ophthalmology, Städtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane, Dessau, Germany
| | - I Frank Ciernik
- Department of Radiation Oncology, Städtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane, Dessau, Germany
- Department of Radiation Oncology, Martin Luther Universität Halle-Wittenberg, Halle (Saale), Germany
| |
Collapse
|
3
|
Jaarsma-Coes MG, Klaassen L, Marinkovic M, Luyten GPM, Vu THK, Ferreira TA, Beenakker JWM. Magnetic Resonance Imaging in the Clinical Care for Uveal Melanoma Patients-A Systematic Review from an Ophthalmic Perspective. Cancers (Basel) 2023; 15:cancers15112995. [PMID: 37296958 DOI: 10.3390/cancers15112995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
Conversely to most tumour types, magnetic resonance imaging (MRI) was rarely used for eye tumours. As recent technical advances have increased ocular MRI's diagnostic value, various clinical applications have been proposed. This systematic review provides an overview of the current status of MRI in the clinical care of uveal melanoma (UM) patients, the most common eye tumour in adults. In total, 158 articles were included. Two- and three-dimensional anatomical scans and functional scans, which assess the tumour micro-biology, can be obtained in routine clinical setting. The radiological characteristics of the most common intra-ocular masses have been described extensively, enabling MRI to contribute to diagnoses. Additionally, MRI's ability to non-invasively probe the tissue's biological properties enables early detection of therapy response and potentially differentiates between high- and low-risk UM. MRI-based tumour dimensions are generally in agreement with conventional ultrasound (median absolute difference 0.5 mm), but MRI is considered more accurate in a subgroup of anteriorly located tumours. Although multiple studies propose that MRI's 3D tumour visualisation can improve therapy planning, an evaluation of its clinical benefit is lacking. In conclusion, MRI is a complementary imaging modality for UM of which the clinical benefit has been shown by multiple studies.
Collapse
Affiliation(s)
- Myriam G Jaarsma-Coes
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Lisa Klaassen
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Radiation Oncology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Marina Marinkovic
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Gregorius P M Luyten
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - T H Khanh Vu
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Teresa A Ferreira
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Jan-Willem M Beenakker
- Department of Ophthalmology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Radiation Oncology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| |
Collapse
|
4
|
Hussain RN, Damato B, Heimann H. Choroidal biopsies; a review and optimised approach. Eye (Lond) 2023; 37:900-906. [PMID: 35941182 PMCID: PMC10050311 DOI: 10.1038/s41433-022-02194-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/11/2022] [Accepted: 07/18/2022] [Indexed: 11/09/2022] Open
Abstract
The majority of choroidal tumours are diagnosed accurately with clinical examination and the additional data obtained from non-invasive imaging techniques. Choroidal biopsies may be undertaken for diagnostic clarity in cases such as small melanocytic or indeterminate lesions, identifying the primary tumour in the case of choroidal metastases or the subclassification of rarer conditions such as uveal lymphoma. There is however an increasing use of biopsy techniques for prognostication in uveal melanoma. This review explores the main indications and surgical techniques for tumour acquisition, and the optimised approach utilised by the current authors to improve successful yield for histological and genetic analysis.
Collapse
Affiliation(s)
- R N Hussain
- Liverpool Ocular Oncology Centre, Royal Liverpool Hospital, Liverpool, L7 8XP, UK.
| | - B Damato
- Ocular Oncology Service, Moorfields Eye Hospital, London, EC1V 2PD, UK
- NIHR Biomedical Research Centre for Ophthalmology at Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, EC1V 2PD, UK
| | - H Heimann
- Liverpool Ocular Oncology Centre, Royal Liverpool Hospital, Liverpool, L7 8XP, UK
| |
Collapse
|
5
|
Beenakker JWM, Rasch CRN. Letter to the Editor of Radiotherapy and Oncology regarding the paper titled "MRI and FUNDUS image fusion for improved ocular biometry in Ocular Proton Therapy" by Via et al. Radiother Oncol 2022; 176:251. [PMID: 35988772 DOI: 10.1016/j.radonc.2022.08.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 08/15/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Jan-Willem M Beenakker
- Department of Radiation Oncology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands; Department of Radiology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands; Department of Ophthalmology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands.
| | - Coen R N Rasch
- Department of Radiation Oncology, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| |
Collapse
|
6
|
Via R, Fattori G, Pica A, Paganelli C, Lomax A, Schalenbourg A, Weber DC, Baroni G, Hrbacek J. Response to "Letter to the Editor of Radiotherapy and Oncology regarding the paper titled "MRI and FUNDUS image fusion for improved ocular biometry in Ocular Proton Therapy" by Via et al.". Radiother Oncol 2022; 176:252. [PMID: 35988774 DOI: 10.1016/j.radonc.2022.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Riccardo Via
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland.
| | - Giovanni Fattori
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland
| | - Alessia Pica
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland
| | - Chiara Paganelli
- Dipartimento di Elettronica Informazione e Bioingegneria, Politecnico di Milano, Milano 20133, Italy
| | - Antony Lomax
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland
| | - Ann Schalenbourg
- Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, FAA, Lausanne, Switzerland
| | - Damien Charles Weber
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland; Department of Radiation Oncology, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland; Department of Radiation Oncology, University Hospital Bern, Freiburgstrasse 18, 3010 Bern, Switzerland
| | - Guido Baroni
- Dipartimento di Elettronica Informazione e Bioingegneria, Politecnico di Milano, Milano 20133, Italy
| | - Jan Hrbacek
- Paul Scherrer Institut (PSI), Center for Proton Therapy, 5232 Villigen PSI, Switzerland
| |
Collapse
|
7
|
Klaassen L, Jaarsma-Coes MG, Verbist BM, Vu TK, Marinkovic M, Rasch CR, Luyten GP, Beenakker JWM. Automatic Three-Dimensional Magnetic Resonance-based measurements of tumour prominence and basal diameter for treatment planning of uveal melanoma. Phys Imaging Radiat Oncol 2022; 24:102-110. [PMID: 36386446 PMCID: PMC9649381 DOI: 10.1016/j.phro.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2022] Open
Abstract
Background and Purpose Three-dimensional (3D) Magnetic Resonance Imaging (MRI) is increasingly used to complement conventional two-dimensional ultrasound in the assessment of tumour dimension measurement of uveal melanoma. However, the lack of definitions of the 3D measurements of these tumour dimensions hinders further adaptation of MRI in ocular radiotherapy planning. In this study, we composed 3D MR-based definitions of tumour prominence and basal diameter and compared them to conventional ultrasound. Materials and methods Tumours were delineated on 3DT2 and contrast-enhanced 3DT1 (T1gd) MRI for 25 patients. 3D definitions of tumour prominence and diameter were composed and evaluated automatically on the T1gd and T2 contours. Automatic T1gd measurements were compared to manual MRI measurements, to automatic T2 measurements and to manual ultrasound measurements. Results Prominence measurements were similar for all modalities (median absolute difference 0.3 mm). Automatic T1gd diameter measurements were generally larger than manual MRI, automatic T2 and manual ultrasound measurements (median absolute differences of 0.5, 1.6 and 1.1 mm respectively), mainly due to difficulty defining the axis of the largest diameter. Largest differences between ultrasound and MRI for both prominence and diameter were found in anteriorly located tumours (up to 1.6 and 4.5 mm respectively), for which the tumour extent could not entirely be visualized with ultrasound. Conclusions The proposed 3D definitions for tumour prominence and diameter agreed well with ultrasound measurements for tumours for which the extent was visible on ultrasound. 3D MRI measurements generally provided larger diameter measurements than ultrasound. In anteriorly located tumours, the MRI measurements were considered more accurate than conventional ultrasound.
Collapse
Affiliation(s)
- Lisa Klaassen
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Leiden University Medical Center, Department of Radiology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Leiden University Medical Center, Department of Radiation Oncology, PO Box 9600, 2300 RC Leiden, the Netherlands
| | - Myriam G. Jaarsma-Coes
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Leiden University Medical Center, Department of Radiology, PO Box 9600, 2300 RC Leiden, the Netherlands
| | - Berit M. Verbist
- Leiden University Medical Center, Department of Radiology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Holland Particle Therapy Center, PO Box 110, 2600 AC Delft, the Netherlands
| | - T.H. Khanh Vu
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
| | - Marina Marinkovic
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
| | - Coen R.N. Rasch
- Leiden University Medical Center, Department of Radiation Oncology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Holland Particle Therapy Center, PO Box 110, 2600 AC Delft, the Netherlands
| | - Gregorius P.M. Luyten
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
| | - Jan-Willem M. Beenakker
- Leiden University Medical Center, Department of Ophthalmology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Leiden University Medical Center, Department of Radiology, PO Box 9600, 2300 RC Leiden, the Netherlands
- Leiden University Medical Center, Department of Radiation Oncology, PO Box 9600, 2300 RC Leiden, the Netherlands
| |
Collapse
|
8
|
Histopathologic and MR Imaging Appearance of Spontaneous and Radiation-Induced Necrosis in Uveal Melanomas: Initial Results. Cancers (Basel) 2022; 14:cancers14010215. [PMID: 35008378 PMCID: PMC8750257 DOI: 10.3390/cancers14010215] [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: 10/17/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Uveal melanomas may undergo necrosis, both spontaneously or following radiotherapy. Nowadays radiotherapy is the preferred treatment, whereas enucleation of the eye is used in selected cases. In order to differentiate the effects of radiotherapy from spontaneous degenerative changes in uveal melanomas, we compared the appearance of necrosis, both from a histopathological point of view and from the perspective of MR imaging, in two groups of patients with uveal melanoma: a group who had undergone previous proton beam radiotherapy (secondary enucleation); a control group who had undergone enucleation without any previous radiotherapy treatment (primary enucleation). Irradiated and nonirradiated uveal melanomas differ on the basis of the histological appearance, the MR imaging appearance and the distribution of necrosis. We hope that the findings we observed could be extended to all patients with uveal melanomas treated with radiotherapy, and may enhance the accuracy of radiologists in evaluating MR examinations after radiotherapy. Abstract Necrosis in uveal melanomas can be spontaneous or induced by radiotherapy. The purpose of our study was to compare the histopathologic and MRI findings of radiation-induced necrosis of a group of proton beam-irradiated uveal melanomas with those of spontaneous necrosis of a control group of patients undergoing primary enucleation. 11 uveal melanomas who had undergone proton beam radiotherapy, MRI and secondary enucleation, and a control group of 15 untreated uveal melanomas who had undergone MRI and primary enucleation were retrospectively identified. Within the irradiated and nonirradiated group, 7 and 6 eyes with histological evidence of necrosis respectively, were furtherly selected for the final analysis; the appearance of necrosis was assessed at histopathologic examination and MRI. Irradiated melanomas showed a higher degree of necrosis as compared with nonirradiated tumors. Irradiated and nonirradiated lesions differed based on the appearance and distribution of necrosis. Irradiated tumors showed large necrotic foci, sharply demarcated from the viable neoplastic tissue; nonirradiated tumors demonstrated small, distinct foci of necrosis. Radiation-induced necrosis, more pigmented than surrounding viable tumor, displayed high signal intensity on T1-weighted and low signal intensity on T2-weighted images. The hemorrhagic/coagulative necrosis, more prevalent in nonirradiated tumors (4 out of 6 vs. 1 out of 7 cases), appeared hyperintense on T2-weighted and hypointense on T1-weighted images. Our study boosts the capability to recognize radiation-induced alterations in uveal melanomas at MRI and may improve the accuracy of radiologists in the evaluation of follow-up MR examination after radiotherapy.
Collapse
|