Insights into the Complexity of Paradoxical Antioxidants Behavior. And the Reasons for it’s almost Zero or no Effect on Stroke
Published on: 31st January, 2025
Antioxidants are groups of compounds that neutralize free radicals and Reactive Oxygen Species (ROS) in the cell [1]. Antioxidant activity in food and beverages has become one of the most interesting features in the science community. These antioxidants provide protection against damage caused by free radicals played important roles in the development of many chronic diseases including cardiovascular diseases, aging, heart disease, anemia, cancer, and inflammation [2].
Hepatic Angiomyolipoma Mimicking Hepatocellular Carcinoma: Another Rare Case Report
Published on: 11th February, 2025
Epithelioid angiomyolipomas (AML) are uncommon mesenchymal neoplasms, belonging to the group of perivascular epithelioid cell neoplasms (PECOMA). Hepatic PECOMA is even rarer. It’s difficult to diagnose in preoperative by imaging, especially when the fatty component is scant or absent. The gold standard for the diagnosis is histologic examination coupled with an immunohistochemical study. Positive HMB45 immunostaining of the myoid cells is a major diagnostic feature. Herein, we report a particular case of hepatic angiomyolipoma in a middle-aged woman with no significant medical past history. The preoperative diagnosis was difficult given the absence of specific clinical manifestations, even the radiologists considered high suspicion of hepatocellular carcinoma. The final diagnosis has been made by post-operative histology coupled with an immunohistochemistry study.
Pneumothorax as Complication of CT Guided Lung Biopsy: Frequency, Severity and Assessment of Risk Factors
Published on: 12th February, 2025
Background: CT-guided lung biopsy is routinely performed minimally invasive procedure. Imaging findings in the lung can have a broad differential diagnosis; therefore, it is indicated for definitive determination of pulmonary nodules or masses. Post-biopsy complications are common with most of them manageable in daycare. As pneumothorax is the most common complication, frequency and severity of pneumothorax with assessment of risk factors and follow-up for resolution is necessary.Methods: A prospective evaluation of 123 biopsies with automated coaxial biopsy of 18 gauge was done. Post-biopsy pneumothorax was evaluated for its incidence and resolution. The studied risk factors were; patient age, sex, lesion location, lesion size, shortest pleural lesion depth, traversed lung parenchymal distance, presence of emphysema, fissure penetration, needle thoracic wall angle, and lesion characteristics.Results: Reported immediate post-procedural pneumothorax was 22% with 19% of mild, 4% of moderate and 2.4% of severe cases. 51.9% of cases showed resolution within 24 hours. The intervention was required in only 4.8% of biopsy cases. A significant p - value of pneumothorax with the nodule depth increased traversed lung parenchymal distance, acute needle angle, fissure puncture, and presence of emphysema was seen. Emphysema was an independent variable in pneumothorax in multivariate analysis.Conclusion: Pneumothorax is an unamenable consequence of CT-guided lung biopsy and a cautious approach should be kept in view of the variables that are associated with it to reduce its incidence and severity in patients.
Survey of Advanced Image Fusion Techniques for Enhanced Visualization in Cardiovascular Diagnosis and Treatment
Published on: 6th March, 2025
Cardiovascular Diseases (CVDs) remain a major global health concern, necessitating accurate and comprehensive diagnostic techniques. Traditional medical imaging modalities, such as CT angiography, PET, MRI, and ultrasound, provide crucial but limited information when used independently. Image fusion techniques integrate complementary modalities, enhance visualization, and improve diagnostic accuracy. This paper presents a theoretical study of advanced image fusion methods applied to cardiovascular imaging. We explore wavelet-based, Principal Component Analysis (PCA), and deep learning-driven fusion models, emphasizing their theoretical underpinnings, mathematical formulation, and potential clinical applications. The proposed framework enables improved coronary artery visualization, cardiac function assessment, and real-time hemodynamic analysis, offering a non-invasive and highly effective approach to cardiovascular diagnostics.MSC Codes: 68U10,94A08,92C55,65T60,62H25,68T07.
Regulation of Fear Behavior by Microcircuits within the Mouse Amygdala
Published on: 10th March, 2025
Background: The amygdala is a core structure in the mammalian brain that processes emotion and memory. Its complex neuronal composition and intricate microcircuit mechanisms play key roles in behaviors such as fear, anxiety, and reward. The diversity of neuronal types and the dynamics of these microcircuits provide the neural foundation for the encoding and extinction of fear memories.Aim: This is a retrospective review article summarizing recent research on the amygdala and fear behavior in mice, which is of significant importance in helping people to comprehensively understand and recognize that the amygdala is the core regulator of fear behavior.Methodology: An extensive and systematic search of electronic databases (Medline, PubMed, Web of Science) using keywords related to the amygdala and the technologies involved in the study such as “mouse amygdala,” “basolateral amygdala (BLA),” “central amygdala (CeA),” “fear extinction,” “fear learning,” and “microcircuits.” Articles meeting the selection criteria were included as candidate references.Results: By integrating recent findings from optogenetics, chemogenetics, and single-cell sequencing, this review reveals the interactions between glutamatergic projection neurons and GABAergic interneurons in the amygdala, the functional division between subnuclei, and the neural basis of cross-brain area coordination. Additionally, it discusses the technical challenges in amygdala research and future directions, providing theoretical support for understanding the pathophysiology of emotional disorders.Conclusion: The amygdala is intimately linked to emotional health, playing a critical role in understanding the mechanisms underlying the development of psychiatric disorders such as anxiety, depression, addiction, and post-traumatic stress disorder (PTSD). Despite advances in methodologies such as in vivo calcium imaging, neural circuit tracing, and electrophysiological techniques, which are progressively uncovering the underlying mechanisms of amygdalar regulation of emotional behaviors, the intrinsic microcircuitry of the amygdala remains highly complex. Significant gaps persist, necessitating further exploration and refinement to elucidate unresolved aspects of its functional architecture and behavioral modulation.
Reduced Pain Scores during Indocyanine Green Lymphography by using a Different Preparation Formula
Published on: 1st April, 2025
Purpose: The purpose of this study was to investigate whether a different indocyanine green lymphography formula can reduce the severe pain encountered during this investigation.Methods: Indocyanine green ICG lymphography frequently induces severe and intolerable pain in patients. It is very important to develop a relatively painless lymphography method. This helps reduce patients’ apprehension during examination. Our center conducted randomized control groups of 60 patients with limb lymphedema. Cases were divided into experimental and control groups. Patients in the experimental group were injected with indocyanine green solution containing 5% glucose, while patients in the control group were injected with indocyanine green solution with sterile water.VAS scores were recorded pre-injection, during, and at 10, 20, and 30 minutes post-injection. We recorded possible side effects, e.g. skin redness, itching, subcutaneous bleeding, bruising, severe allergic reactions, and other complications within 24 and 48 hours after imaging, and analyzed the pain score data. Results: The average pain score of the experimental group was 0-3 points, while the control group was 6-8 points. Disease staging was accurately assessed based on imaging results . No other serious complications occurred.Conclusion: Pain can be significantly reduced by the new modality. This method does not affect lymphography results and imaging quality, and there are no obvious serious complications.
Microcystic Meningioma: Atypical Meningioma Revisited. Rare Case Report with Review of Literature
Published on: 10th April, 2025
Meningiomas, classical extra-axial dural-based tumors of the meninges, have well-documented classical imaging features and signs on CT and MRI. Most meningiomas are classical lesions with prompt diagnosis on imaging and generally exhibit benign outcomes with slow growth patterns. The latest WHO classification of tumors in 2021 has classified 15 subtypes of meningiomas, and while classical meningiomas are WHO Grade 1 tumors, grading between varying subtypes varies between WHO Grades 1 and 3. The microcystic meningioma is a rare and atypical subtype of meningioma that has been sparsely documented in literature. In this case report, we revisit this rare subtype of meningioma with a brief review of literature.
Metastatic Brain Melanoma: A Rare Case with Review of Literature
Published on: 12th April, 2025
Melanoma is a highly malignant neoplasm arising from melanocytes, which are melanin-producing neural crest cells primarily located in the basal layer of the epidermis, making cutaneous melanoma the most common subtype. However, melanocytes are also found in other anatomical locations, and primary non-cutaneous melanomas, though rare, have been documented. Due to the aggressive nature of this malignancy, it carries a poor prognosis, particularly because it tends to metastasize to various, often atypical, sites. Recognizing these variable presentations is essential for timely diagnosis. Here, we report a rare case of metastatic brain melanoma in a young female and review the relevant literature, highlighting the importance of imaging in identification.
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