Evaluating Optical Coherence Tomography (OCT) Findings as Potential Biomarkers in Central Nervous System (CNS) Lymphoma with or Without Ocular Involvement

2019 ◽  
Author(s):  
Muhammad Hassan ◽  
Muhammad Sohail Halim ◽  
Arash Maliki ◽  
Rubbia Afridi ◽  
Nam V. Nguyen ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Optical Coherence Tomography ◽  
Nervous System ◽  
Cns Lymphoma ◽  
Ocular Involvement ◽  
Optical Coherence ◽  
Potential Biomarkers

scholarly journals Evaluating optical coherence tomography (OCT) findings as potential biomarkers in central nervous system (CNS) lymphoma with or without ocular involvement

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Muhammad Hassan ◽  
Muhammad Sohail Halim ◽  
Rubbia Afridi ◽  
Nam V. Nguyen ◽  
Quan Dong Nguyen ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Optical Coherence Tomography ◽  
Nervous System ◽  
Ocular Disease ◽  
Ocular Involvement ◽  
Optical Coherence ◽  
Ellipsoid Zone ◽  
Intraretinal Fluid ◽  
Group 2 ◽  
Group 1

Abstract Background To evaluate spectral domain optical coherence tomography (SD-OCT) findings as biomarkers in primary central nervous system lymphoma (PCNSL) with or without ocular involvement. Methods This study was a cross-sectional study and patients with a confirmed diagnosis of PCNSL with or without ocular involvement were included. Patient cohort finder tool was used to identify patients with lymphoma using ICD-10 codes (C82–C88), from January 2004 to October 2017. A total of 14,820 patients were identified. Procedure code (92134) for optical coherence tomography (OCT) was then applied to identify patients who had underdone OCT imaging at ophthalmology clinic. Clinic charts of 460 patients with lymphoma and available OCT were reviewed to identify patients with confirmed diagnosis of PCNSL and divided into two groups (Group 1: with and Group 2: without ocular involvement). OCT scans of patients in both study groups were analyzed for the presence of (1) Hyperreflective deposits in choroid, retinal pigment epithelium (RPE), outer and inner retina; (2) RPE thickening; (3) Vitreous debris; (4) Intraretinal fluid; (5) Ellipsoid zone disruption by masked graders. Chi-square was used to analyze the difference between the groups. Results Twenty-two eyes (11 patients) with PCNSL were included this study (Group 1: 6 eyes and Group 2: 16 eyes). Mean age of subjects was 65 years. Five patients (45.45%) were female. There was no statistically significant difference between the groups for the presence of hyperreflective deposits in choroid, RPE, outer and inner retina, and presence of RPE thickening, intraretinal fluid, and ellipsoid zone disruption. Vitreous debris was found more commonly in group 1 subjects (83%) than group 2 (31.25%) (p = 0.029). All subjects in both groups showed hyperreflective deposits in the RPE demonstrating RPE infiltration. However, RPE thickening was noted only in 3 patients (Group1: 1 and Group2: 2). Conclusions OCT finding of hyperreflective deposits present in eyes with lymphoma secondary to PCNSL are also observed in eyes with PCNSL without ocular disease. However, the vitreous deposits are more commonly found in eyes with ocular disease. These hyperreflective deposits can serve as biomarkers for early detection of ocular involvement by PCNSL.

scholarly journals Hypoxia-induced inflammation: Profiling the first 24-hour posthypoxic plasma and central nervous system changes

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0246681
Author(s):  
Louise A. Mesentier-Louro ◽  
Barbara Rangel ◽  
Laurel Stell ◽  
M. Ali Shariati ◽  
Roopa Dalal ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Optical Coherence Tomography ◽  
Nervous System ◽  
High Altitude ◽  
Vision Loss ◽  
Optical Coherence ◽  
Tissue Edema ◽  
Systemic Hypoxia ◽  
Retinal Inflammation

Central nervous system and visual dysfunction is an unfortunate consequence of systemic hypoxia in the setting of cardiopulmonary disease, including infection with SARS-CoV-2, high-altitude cerebral edema and retinopathy and other conditions. Hypoxia-induced inflammatory signaling may lead to retinal inflammation, gliosis and visual disturbances. We investigated the consequences of systemic hypoxia using serial retinal optical coherence tomography and by assessing the earliest changes within 24h after hypoxia by measuring a proteomics panel of 39 cytokines, chemokines and growth factors in the plasma and retina, as well as using retinal histology. We induced severe systemic hypoxia in adult C57BL/6 mice using a hypoxia chamber (10% O2) for 1 week and rapidly assessed measurements within 1h compared with 18h after hypoxia. Optical coherence tomography revealed retinal tissue edema at 18h after hypoxia. Hierarchical clustering of plasma and retinal immune molecules revealed obvious segregation of the 1h posthypoxia group away from that of controls. One hour after hypoxia, there were 10 significantly increased molecules in plasma and 4 in retina. Interleukin-1β and vascular endothelial growth factor were increased in both tissues. Concomitantly, there was significantly increased aquaporin-4, decreased Kir4.1, and increased gliosis in retinal histology. In summary, the immediate posthypoxic period is characterized by molecular changes consistent with systemic and retinal inflammation and retinal glial changes important in water transport, leading to tissue edema. This posthypoxic inflammation rapidly improves within 24h, consistent with the typically mild and transient visual disturbance in hypoxia, such as in high-altitude retinopathy. Given hypoxia increases risk of vision loss, more studies in at-risk patients, such as plasma immune profiling and in vivo retinal imaging, are needed in order to identify novel diagnostic or prognostic biomarkers of visual impairment in systemic hypoxia.

scholarly journals Primary Central Nervous System Lymphoma in Elderly Patients: Management and Perspectives

Cancers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 3479
Author(s):  
Andrea Morales-Martinez ◽  
Fernando Lozano-Sanchez ◽  
Alberto Duran-Peña ◽  
Khe Hoang-Xuan ◽  
Caroline Houillier
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Elderly Patients ◽  
Treatment Strategies ◽  
Central Nervous System Lymphoma ◽  
High Dose Chemotherapy ◽  
Current Treatment ◽  
Cns Lymphoma ◽  
High Dose ◽  
Consolidation Phase

The management of elderly patients suffering from primary central nervous system (CNS) lymphoma, who represent a rapidly growing population, is challenging. Despite the advances made in PCNSL treatment, the prognosis in older patients remains unsatisfactory. The high risk of systemic and CNS toxicity induced by a high-dose chemotherapy regimen and radiation therapy, respectively, limits the use of consolidation phase treatments in elderly patients and contributes to the poor outcome of these patients. Here, we review the current treatment strategies and ongoing trials proposed for elderly PCNSL patients.

scholarly journals Consensus Recommendations for MRI and PET Imaging of Primary Central Nervous System Lymphoma: Guideline Statement from the International Primary CNS Lymphoma Collaborative Group (IPCG)

2021 ◽  
Author(s):  
Ramon F Barajas Jr ◽  
Letterio S Politi ◽  
Nicoletta Anzalone ◽  
Heiko Schöder ◽  
Christopher P Fox ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Tumor Imaging ◽  
Primary Cns Lymphoma ◽  
Central Nervous System Lymphoma ◽  
Response Assessment ◽  
Integrated Approach ◽  
Collaborative Group ◽  
Cns Lymphoma ◽  
Consensus Recommendations

Abstract Advanced molecular and pathophysiologic characterization of Primary Central Nervous System Lymphoma (PCNSL) has revealed insights into promising targeted therapeutic approaches. Medical imaging plays a fundamental role in PCNSL diagnosis, staging, and response assessment. Institutional imaging variation and inconsistent clinical trial reporting diminishes the reliability and reproducibility of clinical response assessment. In this context, we aimed to: 1) critically review the use of advanced PET and MRI in the setting of PCNSL; 2) provide results from an international survey of clinical sites describing the current practices for routine and advanced imaging, and 3) provide biologically based recommendations from the International PCNSL Collaborative Group (IPCG) on adaptation of standardized imaging practices. The IPCG provides PET and MRI consensus recommendations built upon previous recommendations for standardized brain tumor imaging protocols (BTIP) in primary and metastatic disease. A biologically integrated approach is provided to addresses the unique challenges associated with the imaging assessment of PCNSL. Detailed imaging parameters facilitate the adoption of these recommendations by researchers and clinicians. To enhance clinical feasibility, we have developed both “ideal” and “minimum standard” protocols at 3T and 1.5T MR systems that will facilitate widespread adoption.

scholarly journals Immunogenicity of high-dose influenza vaccination in patients with primary central nervous system malignancy

2018 ◽  
Vol 5 (3) ◽  
pp. 176-183
Author(s):  
Roy E Strowd ◽  
Gregory Russell ◽  
Fang-Chi Hsu ◽  
Annette F Carter ◽  
Michael Chan ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Influenza Vaccine ◽  
Elderly Patients ◽  
Influenza Vaccination ◽  
Standard Dose ◽  
High Grade Glioma ◽  
Cns Lymphoma ◽  
High Dose ◽  
Central Nervous System Malignancy

Abstract Background For cancer patients, rates of influenza-associated hospitalization and death are 4 times greater than that of the general population. Previously, we reported reduced immunogenicity to the standard-dose influenza vaccine in patients with central nervous system malignancy. In other poorly responding populations (eg, elderly patients), high-dose vaccination has improved efficacy and immunogenicity. Methods A prospective cohort study was designed to evaluate the immunogenicity of the Fluzone® high-dose influenza vaccine in brain tumor patients. Data on diagnosis, active oncologic treatment, and immunologic status (eg, CD4 count, CD8 count, CD4:CD8 ratio) were collected. All patients received the high-dose vaccine (180 µg). Hemagglutination inhibition titers were measured at baseline, day 28, and 3 months following vaccination to determine seroconversion (≥4-fold rise) and seroprotection (titer ≥1:40), which were compared to our prior results. Results Twenty-seven patients enrolled. Diagnoses included high-grade glioma (85%), CNS lymphoma (11%), and meningioma (4%). Treatment at enrollment included glucocorticoids (n = 8, 30%), radiation (n = 2, 7%), and chemotherapy (n = 9, 33%). Posttreatment lymphopenia (PTL, CD4 ≤ 200) was observed in 4 patients (15%). High-dose vaccination was well tolerated with no grade III-IV toxicity. Overall, seroconversion rates for the A/H1N1, A/H3N2, and B vaccine strains were significantly higher than in our prior study: 65% vs 37%, 69% vs 23%, and 50% vs 23%, respectively (all P < .04). Seroconversion was universally poor in patients with PTL. While seroprotection at 3 months declined in our prior study, no drop was observed following high-dose vaccination in this cohort. Conclusions The immunologic response to HD influenza vaccination was higher in this cohort than standard-dose influenza vaccination in our prior report. These findings mirror those in elderly patients where high-dose vaccination is the standard of care and raise the possibility of an immunosenescence phenotype.

scholarly journals A CASE OF DISSEMINATED TUBERCULOSIS WITH OCULAR INVOLVEMENT

2015 ◽  
Vol 05 (01) ◽  
pp. 094-096
Author(s):  
Md Fekarul Islam ◽  
Devdeep Mukherjee ◽  
Ritabrata Kundu ◽  
Prabal Chandra Niyogi ◽  
Joydeep Das
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Corneal Opacity ◽  
Ocular Involvement ◽  
Disseminated Tuberculosis ◽  
Ocular Manifestations ◽  
The Central Nervous System ◽  
Immunocompromised State ◽  
Ocular Tb ◽  
Posterior Synechiae

AbstractDisseminated Tuberculosis (DTB) refers to tubercular involvement of two or more non-contiguous sites and is commonly associated with immunocompromised state. It is an unusual presentation of Tuberculosis (TB), especially in the absence of immunodeficiency. 1.4% of patients with Pulmonary Tuberculosis (PTB) develop ocular manifestations but many patients with ocular TB have no evidence of PTB. Tuberculosis can cause a wide variety of ophthalmic findings, ranging from the ocular surface through the optic nerve and to the central nervous system. In this article, we report a case of Disseminated Tuberculosis with ocular involvement in a 5years old female. Our case is unique for the presence of bilateral squint, unilateral nebular type of corneal opacity, bilateral iritis with posterior synechiae and cataract at the same time. It lays emphasis on the fact that a patient with tuberculosis should be screened for multiple foci.

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