scholarly journals Primary Mucosal Melanoma Presenting with a Unilateral Nasal Obstruction of the Left Inferior Turbinate

Medicina ◽  
2021 ◽  
Vol 57 (4) ◽  
pp. 359
Author(s):  
Nicola Lombardo ◽  
Marcello Della Corte ◽  
Corrado Pelaia ◽  
Giovanna Piazzetta ◽  
Nadia Lobello ◽  
...  
Keyword(s):  
Nasal Obstruction ◽  
Signs And Symptoms ◽  
Inferior Turbinate ◽  
Epithelioid Cell ◽  
Mucosal Melanoma ◽  
Positron Emission ◽  
Surgical Difficulty ◽  
Magnetic Resonance Imaging Mri ◽  
Systemic Relapse ◽  
Rare Malignancy

We report the case of a primitive nasal melanoma in an 82-year-old patient, showing how this rare malignancy, with non-specific signs and symptoms, can represent a challenging diagnosis for the physician. A 82-year-old Caucasian patient presented for unilateral nasal obstruction and occasional epistaxis. Computerized tomography (CT) and magnetic resonance imaging (MRI) of the facial massif revealed turbinate hypertrophy and a polypoid phlogistic tissue isointense in T1 with an intermediate signal in T2 and Short-TI Inversion Recovery (STIR)-T2, occupying the middle meatus and the anterior upper and lower left meatus with partial obliteration of the ostium and the infundibulum of the maxillary sinus. The Positron emission tomography (PET) exam was negative for metastases. Conservatory surgery in the left anterior video rhinoscopy was performed, allowing a radical 4-cm tumor excision. Histology reported epithelioid cell melanoma, PanK−, CD45−, and PanMelanoma+. Adjuvant radiotherapy was suggested, even considering a complete resection as the result of surgery. No local or systemic relapse was noticed at the 2-month follow-up visit. Although mucosal melanoma is a rare and aggressive malignancy characterized by a poor prognosis, early diagnosis allows a more conservative approach, with little surgical difficulty and no aesthetic effect. Our case raises awareness of the importance of early intervention even in those cases where the clinic symptoms and diagnostic images show uncertain severity.

EVALUATING THE RESULTS OF SEPTOPLASTY AND PARTIAL INFERIOR TURBINOPLASTY

2017 ◽  
pp. 46-52
Author(s):  
Thanh Thai Le ◽  
Phuong Nam Tran ◽  
Thi Ngan An Nguyen
Keyword(s):  
Key Words ◽  
Nasal Obstruction ◽  
Inferior Turbinate ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Grade Ii ◽  
The Common

Aims: To study outcomes of septoplasty and partial inferior turbinectomy (PIT) method, expecting leastsurgical equipment, good result, price rationalization. Methods: Prospective, cross-sectional study. Including 40 patients treated by septoplasty and PIT method. Assessment had been made after 3 months post-op. Results: The common symptoms were nasal obstruction (100%), headache (40%). The deformities of nasal septalwere deviation (42.5%), crest (30%). There were 67.5% of patients with severe bilateral hypertrophic inferior turbinate, mostly over grade II, enlargement both soft and bone parts (60%). After 3 months, the nasal obstruction and headache presented good or great results in 90% of patients, 93.7% of patients had straight nasal septaland 90% hadsmall inferior turbinate.VAS: patients’s contentment was 100%. Conclusions: The study showed that septoplasty and partial inferior turbinectomy presented good results with 87.5% after surgery and 90% after 3 months. Key words: septal deformity, hypertrophy inferior turbinate, septoplasty, partial inferior turbinectomy

A Novel Secure and Robust encryption scheme for medical images

2020 ◽  
Vol 16 ◽  
Author(s):  
Siyamol Chirakkarottu ◽  
Sheena Mathew
Keyword(s):  
Medical Images ◽  
Technological Development ◽  
Imaging Techniques ◽  
Chaotic Map ◽  
Two Phase ◽  
Positron Emission ◽  
Medical Diagnostic ◽  
Wireless Medium ◽  
Health Care Applications ◽  
Magnetic Resonance Imaging Mri

Background: Medical imaging encloses different imaging techniques and processes to image the human body for medical diagnostic and treatment purposes. Hence it plays an important role to improve public health. The technological development in biomedical imaging specifically in X-ray, Computed Tomography (CT), nuclear ultrasound including Positron Emission Tomography (PET), optical and Magnetic Resonance Imaging (MRI) can provide valuable information unique to a person. Objective: In health care applications, the images are needed to be exchanged mostly over wireless medium. The diagnostic images with confidential information of a patient need to be protected from unauthorized access during transmission. In this paper, a novel encryption method is proposed to improve the security and integrity of medical images. Methods: Chaotic map along with DNA cryptography is used for encryption. The proposed method describes a two phase encryption of medical images. Results: Performance of the proposed method is also tested by various analysis metrics. Robustness of the method against different noises and attacks is analyzed. Conclusion: The results show that the method is efficient and well suitable to medical images.

Comparison Between 18F-Dopa and 18F-Fet PET/CT in Patients with Suspicious Recurrent High Grade Glioma: A Literature Review and Our Experience

2019 ◽  
Vol 12 (3) ◽  
pp. 220-228 ◽  
Author(s):  
Laura Evangelista ◽  
Lea Cuppari ◽  
Luisa Bellu ◽  
Daniele Bertin ◽  
Mario Caccese ◽  
...  
Keyword(s):  
Case Series ◽  
High Grade Glioma ◽  
High Grade ◽  
True Negative ◽  
Fet Pet ◽  
Positron Emission ◽  
Pet Ct ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of ◽  
Sensitivity Specificity

Purpose: The aims of the present study were to: 1- critically assess the utility of L-3,4- dihydroxy-6-18Ffluoro-phenyl-alanine (18F-DOPA) and O-(2-18F-fluoroethyl)-L-tyrosine (18F-FET) Positron Emission Tomography (PET)/Computed Tomography (CT) in patients with high grade glioma (HGG) and 2- describe the results of 18F-DOPA and 18F-FET PET/CT in a case series of patients with recurrent HGG. Methods: We searched for studies using the following databases: PubMed, Web of Science and Scopus. The search terms were: glioma OR brain neoplasm and DOPA OR DOPA PET OR DOPA PET/CT and FET OR FET PET OR FET PET/CT. From a mono-institutional database, we retrospectively analyzed the 18F-DOPA and 18F-FET PET/CT of 29 patients (age: 56 ± 12 years) with suspicious for recurrent HGG. All patients underwent 18F-DOPA or 18F-FET PET/CT for a multidisciplinary decision. The final definition of recurrence was made by magnetic resonance imaging (MRI) and/or multidisciplinary decision, mainly based on the clinical data. Results: Fifty-one articles were found, of which 49 were discarded, therefore 2 studies were finally selected. In both the studies, 18F-DOPA and 18F-FET as exchangeable in clinical practice particularly for HGG patients. From our institutional experience, in 29 patients, we found that sensitivity, specificity and accuracy of 18F-DOPA PET/CT in HGG were 100% (95% confidence interval- 95%CI - 81-100%), 63% (95%CI: 39-82%) and 62% (95%CI: 39-81%), respectively. 18F-FET PET/CT was true positive in 4 and true negative in 4 patients. Sensitivity, specificity and accuracy for 18F-FET PET/CT in HGG were 100%. Conclusion: 18F-DOPA and 18F-FET PET/CT have a similar diagnostic accuracy in patients with recurrent HGG. However, 18F-DOPA PET/CT could be affected by inflammation conditions (false positive) that can alter the final results. Large comparative trials are warranted in order to better understand the utility of 18F-DOPA or 18F-FET PET/CT in patients with HGG.

scholarly journals Bioabsorbable Implant for Treatment of Nasal Valve Collapse with or without Concomitant Procedures

2021 ◽  
Author(s):  
Douglas M. Sidle ◽  
Pablo Stolovitzky ◽  
Ellen M. O'Malley ◽  
Randall A. Ow ◽  
Nathan E. Nachlas ◽  
...  
Keyword(s):  
Adverse Events ◽  
Nasal Obstruction ◽  
Large Population ◽  
Inferior Turbinate ◽  
Nasal Valve ◽  
Serious Adverse Events ◽  
Vas Scores ◽  
Nasal Implant ◽  
Nasal Valve Collapse

AbstractThe aim of the study is to report outcomes after treatment of nasal valve collapse with a bioabsorbable nasal implant. It involves two prospective, multicenter, post-market studies evaluating long-term effectiveness of the LATERA implant for severe to extreme nasal obstruction. Participants underwent implant alone or with concomitant inferior turbinate reduction (ITR) and/or septoplasty. Outcome measures included the change from baseline Nasal Obstruction Symptom Evaluation (NOSE) scores, NOSE responder rates, visual analog scale (VAS) scores, and adverse events. A total cohort of 277 participants (109 implants only, 67 implants + ITR, 101 implants + septoplasty + ITR) enrolled at 19 U.S. centers was available for analysis with 177 participants (69 implants only, 39 implants + ITR, 69 implants + septoplasty + ITR) available at 2 years. The mean changes from baseline in NOSE scores and VAS scores were statistically significant (p < 0.001) at all follow-up periods. The baseline NOSE score of 77.8 ± 13.6 was improved to 24.2 ± 23.6 at 24 months. Greater than 90% of participants were NOSE responders across all follow-up periods, 6.1% withdrew for lack of treatment effect. The baseline VAS score of 66.7 ± 18.8 was improved to 21.1 ± 23.9 at 24 months. There were no serious adverse events related to the device or implant procedure. Implant retrieval rate was 4.0% (22/543 implants). Nonserious adverse events were mild to moderate in severity, typically occurred within 6 months of implant, and resolved or were stable. Significant reductions in NOSE and VAS scores and high responder rates from our large population of patients with nasal obstruction who had nasal valve implants confirm sustained effectiveness at 24 months after treatment. The studies are registered on www.clinicaltrials.gov (NCT02952313 and NCT02964312).

scholarly journals Uncommon manifestations of a rare disease: a case of autoimmune GFAP astrocytopathy

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hong Di ◽  
Yue Yin ◽  
Ruxuan Chen ◽  
Yun Zhang ◽  
Jun Ni ◽  
...  
Keyword(s):  
Rare Disease ◽  
Hormone Secretion ◽  
White Matter Lesions ◽  
Signs And Symptoms ◽  
Careful Examination ◽  
Case Presentation ◽  
Inappropriate Antidiuretic Hormone Secretion ◽  
Contrast Enhanced ◽  
The Central Nervous System ◽  
Magnetic Resonance Imaging Mri

Abstract Background Manifestations of intractable hyponatremia and hypokalemia in autoimmune glial fibrillary acidic protein (GFAP) astrocytopathy have been rarely reported. Case presentation A 75-year-old male patient presented as the case of syndrome of inappropriate antidiuretic hormone secretion (SIADH) and intractable hypokalemia, showed fever, fatigue, and mental disorders. Signs and symptoms of meningoencephalitis, ataxia, and cognitive abnormalities. Magnetic resonance imaging (MRI) revealed multiple white matter lesions of the central nervous system. He had GFAP-IgG in the cerebrospinal fluid (CSF). After treatment with corticosteroids, his symptoms were alleviated gradually, and the level of electrolytes was normal. However, head contrast-enhanced MRI + susceptibility-weighted imaging (SWI) showed a wide afflicted region, and the serum GFAP-IgG turned positive. Considering the relapse of the disease, ha was treated with immunoglobulin and mycophenolate mofetil (MMF) to stabilize his condition. Conclusion This case showed a rare disease with uncommon manifestations, suggesting that careful examination and timely diagnosis are essential for disease management and satisfactory prognosis.

scholarly journals The Role of Quantic Molecular Resonance (QMR) in the Treatment of Inferior Turbinate Hypertrophy (ITH): Our Experience With Long-Term Follow-Up in Allergic and Nonallergic Rhinitis Refractory to Medical Therapy. Preliminary Results

2021 ◽  
pp. 014556132110015
Author(s):  
Filippo Ricciardiello ◽  
Davide Pisani ◽  
Pasquale Viola ◽  
Raul Pellini ◽  
Giuseppe Russo ◽  
...  
Keyword(s):  
Nasal Obstruction ◽  
Inferior Turbinate ◽  
Nonallergic Rhinitis ◽  
Turbinate Hypertrophy ◽  
Group A ◽  
Group B ◽  
Inferior Turbinate Hypertrophy ◽  
Molecular Resonance

Objective: The aim of this study was to assess the long-term effectiveness of quantic molecular resonance (QMR) in the treatment of inferior turbinate hypertrophy (ITH) in allergic and nonallergic rhinitis refractory to medical therapy. Methods: This study enrolled 281 patients, 160 males (56.9%) and 121 females (43.1%), mean age 37.8 ± 4.1 years, range 18 to 71. Fifty-four patients have been lost to follow up and have been therefore excluded from the final analysis. Based on skin prick test results, 69 patients were considered allergic (group A) and 158 nonallergic (group B). All subjects underwent before surgery (T0) and 3 (T1), 12 (T2), 24 (T3), and 36 months (T4) after QMR treatment to: 4-phase rhinomanometric examination, nasal endoscopy evaluation, and visual analogue scale to quantify the subjective feelings about nasal obstruction. Results: Subjective and objective parameters showed statistically significant improvement in both groups. Group B parameters not changed during follow-up, while group A showed significant worsening between T1 and subsequent assessments. T4 outcome indicates a better result in nonallergic patients. Conclusions: In accordance with the literature, our preliminary data validate QMR treatment as a successful therapeutic option for nasal obstruction due to ITH. Nonallergic patients had a very good T4 outcome. Allergic patients showed a worsening trend after 1 year probably due to other causes.

Nasal Cytology in Radiofrequency Turbinate Volume Reduction

ORL ◽  
2021 ◽  
pp. 1-6
Author(s):  
Giancarlo Pecorari ◽  
Giuseppe Riva ◽  
Claudia Bartoli ◽  
Mattia Ravera ◽  
Valeria Dell’Era ◽  
...  
Keyword(s):  
Allergic Rhinitis ◽  
Effective Treatment ◽  
Nasal Obstruction ◽  
Nasal Mucosa ◽  
Inferior Turbinate ◽  
Volume Reduction ◽  
Nonallergic Rhinitis ◽  
Turbinate Hypertrophy ◽  
Nasal Cytology ◽  
Rhinitis Medicamentosa

Introduction: Radiofrequency turbinate volume reduction (RFTVR) is an effective treatment of inferior turbinate hypertrophy. RFTVR can reduce epithelial cell alterations in nasal mucosa. The aim of this observational study was to evaluate the effects of RFTVR on nasal obstruction and cytology, stratifying for different types of rhinitis. Methods: Nasal cytology and subjective nasal obstruction were evaluated on 113 patients before RFTVR (T0) and after 3 months (T1). The patients were divided into groups on the basis of the underlying disease: allergic rhinitis, nonallergic rhinitis, rhinitis medicamentosa, and other diseases (e.g., hormonal-based turbinate hypertrophy). Results: Nasal cytology at T0 identified 42 patients with allergic rhinitis, 40 with nonallergic rhinitis, 19 with rhinitis medicamentosa, and 12 with other diseases. An improvement of nasal cytology at T1 was observed in 29.2% of cases. They mainly consisted of patients with nonallergic rhinitis with neutrophils, whose neutrophil infiltrate decreased. Only 2 cases (1.7%) showed a worsening of nasal cytology at T1. A statistically significant decrease in subjective nasal obstruction was observed for every group (p < 0.05). Higher differences of nasal obstruction between T0 and T1 were found in patients with rhinitis medicamentosa or other diseases. Conclusion: RFTVR represents a safe and effective treatment for turbinate hypertrophy of various etiology. It is not responsible for a worsening of inflammatory infiltrate of the nasal mucosa.

scholarly journals A Review on the Value of Imaging in Differentiating between Large Vessel Vasculitis and Atherosclerosis

2021 ◽  
Vol 11 (3) ◽  
pp. 236
Author(s):  
Pieter H. Nienhuis ◽  
Gijs D. van Praagh ◽  
Andor W. J. M. Glaudemans ◽  
Elisabeth Brouwer ◽  
Riemer H. J. A. Slart
Keyword(s):  
Fdg Pet ◽  
Large Vessel Vasculitis ◽  
Large Vessel ◽  
Current Evidence ◽  
Future Directions ◽  
Inflammatory Conditions ◽  
Positron Emission ◽  
Magnetic Resonance Imaging Mri ◽  
Review Reports ◽  
Ct Studies

Imaging is becoming increasingly important for the diagnosis of large vessel vasculitis (LVV). Atherosclerosis may be difficult to distinguish from LVV on imaging as both are inflammatory conditions of the arterial wall. Differentiating atherosclerosis from LVV is important to enable optimal diagnosis, risk assessment, and tailored treatment at a patient level. This paper reviews the current evidence of ultrasound (US), 2-deoxy-2-[18F]fluoro-D-glucose positron emission tomography (FDG-PET), computed tomography (CT), and magnetic resonance imaging (MRI) to distinguish LVV from atherosclerosis. In this review, we identified a total of eight studies comparing LVV patients to atherosclerosis patients using imaging—four US studies, two FDG-PET studies, and two CT studies. The included studies mostly applied different methodologies and outcome parameters to investigate vessel wall inflammation. This review reports the currently available evidence and provides recommendations on further methodological standardization methods and future directions for research.

scholarly journals Cross-Modality Imaging of Murine Tumor Vasculature—a Feasibility Study

2021 ◽  
Author(s):  
Lydia M. Zopf ◽  
Patrick Heimel ◽  
Stefan H. Geyer ◽  
Anoop Kavirayani ◽  
Susanne Reier ◽  
...  
Keyword(s):  
Cancer Biology ◽  
Tumor Vasculature ◽  
Vascular Imaging ◽  
Melanoma Cancer ◽  
Positron Emission ◽  
Vessel Network ◽  
Research Questions ◽  
Magnetic Resonance Imaging Mri ◽  
Single Tumor ◽  
Penetration Depths

AbstractTumor vasculature and angiogenesis play a crucial role in tumor progression. Their visualization is therefore of utmost importance to the community. In this proof-of-principle study, we have established a novel cross-modality imaging (CMI) pipeline to characterize exactly the same murine tumors across scales and penetration depths, using orthotopic models of melanoma cancer. This allowed the acquisition of a comprehensive set of vascular parameters for a single tumor. The workflow visualizes capillaries at different length scales, puts them into the context of the overall tumor vessel network and allows quantification and comparison of vessel densities and morphologies by different modalities. The workflow adds information about hypoxia and blood flow rates. The CMI approach includes well-established technologies such as magnetic resonance imaging (MRI), positron emission tomography (PET), computed tomography (CT), and ultrasound (US), and modalities that are recent entrants into preclinical discovery such as optical coherence tomography (OCT) and high-resolution episcopic microscopy (HREM). This novel CMI platform establishes the feasibility of combining these technologies using an extensive image processing pipeline. Despite the challenges pertaining to the integration of microscopic and macroscopic data across spatial resolutions, we also established an open-source pipeline for the semi-automated co-registration of the diverse multiscale datasets, which enables truly correlative vascular imaging. Although focused on tumor vasculature, our CMI platform can be used to tackle a multitude of research questions in cancer biology.

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