scholarly journals Clinical, dermoscopic, and histopathological evaluations of patients with nail disorders

2021 ◽  
Author(s):  
Mohammed Abu El-Hamd ◽  
Fatma El-Zahraa Salah El-Deen Yassin ◽  
Nehal Hussein Abd El-hamid ◽  
Reham Ezz El-Dawla El-Sharkawy
Keyword(s):  
Potassium Hydroxide ◽  
Histopathological Examination ◽  
Accurate Diagnosis ◽  
Histopathological Diagnosis ◽  
Prognostic Information ◽  
Nail Diseases ◽  
Definitive Method ◽  
Detailed Medical History ◽  
Good Agreement

Objective: This study aimed to assess the possible role of dermoscopy in the diagnosis of different nail disorders compared with the clinical and histopathological diagnosis. Methods: This study included 104 patients with any nail disorders of both sex and any age. All the patients were subjected to a detailed medical history taken, clinical general examination, clinical and dermoscopic examinations of 20 nails. Potassium hydroxide examination was used to examine all patients with suspicious of onychomycosis. Histopathological evaluation was used to examine of clinically ambiguous nail disorders. Results: The most common nail diseases were onychomycosis (54.81%) followed by nail psoriasis (19.2%), and nail lichen planus (3.8%). Conclusion: Clinical evaluation was an important in diagnosis of different nail diseases. Nail dermoscopy could confirm clinical diagnosis and help in getting an accurate diagnosis of nail diseases and guide in the management of nail diseases by permitting better visualization of nail structure and pathology. Histopathological examination provided the most definitive method in reaching an accurate diagnosis due to it could provide etiologic, diagnostic, and prognostic information. There was good agreement between clinical, dermoscopic, and histopathological examinations for accurate diagnosis of different nail diseases.

scholarly journals Correlation of colposcopy with biopsy in cases of abnormal cervical cytology

2019 ◽  
Vol 14 (1) ◽  
pp. 36-39
Author(s):  
Kirtipal Subedi
Keyword(s):  
Predictive Value ◽  
Prospective Observational Study ◽  
Accurate Diagnosis ◽  
Cervical Cytology ◽  
Histopathological Diagnosis ◽  
Cervical Biopsy ◽  
Abnormal Cervical Cytology ◽  
Disease Threshold ◽  
Sensitivity Specificity

Aims: This study aims to find out the role of colposcopy and its correlation with cervical biopsy in detection of pre malignant cervical lesion. Methodology: This is hospital based prospective observational study on 60 cases with abnormal cervical cytology reports conducted in the Department of Obstetrics and Gynecology, PMWH, Thapathali, Kathmandu. Colposcopy guided biopsies were done and findings noted. Results: Among 60 cases enrolled in the study the most common cervical cytology finding was ASCUS, LSIL, HSIL and ASC-H present in 46.6%, 31.6%, 15% and 6.6% respectively.  The colposcopy finding among these cases was normal, CIN1, CIN 2 and CIN 3 in 45%, 23.3%, 16.7% and 9% respectively. Among these cases the most common biopsy finding was normal, CIN 1, CIN 2, CIN 3 and squamous cell carcinoma in 55%, 18.3%, 8.3%, 15% and 3.3% respectively. The sensitivity, specificity, positive predictive value and negative predictive value of colposcopy with CIN 1 as disease threshold was calculated to be 80.6%, 93.1%, 81.8% and 92.6% respectively. While evaluating the validity of colposcopy with histopathology, colposcopy seems to make an accurate diagnosis in 75% of cases, overestimating in 15% and underestimating in 8% of cases. Conclusions: There is a good correlation of colposcopy with histopathological diagnosis of cervical cancer. Keywords: colposcopy, cytology, diagnosis, premalignant  

scholarly journals The role of immunohistochemistry for diagnosing undifferentiated malignancy in the head and neck region

2019 ◽  
Vol 10 (1) ◽  
pp. 48-53
Author(s):  
Mohammad Sowkat Hossain ◽  
S M Mahbubul Alam ◽  
Sk Md Jaynul Islam ◽  
Wasim Selimul Haque ◽  
Shamoli Yasmin
Keyword(s):  
Head And Neck ◽  
Soft Tissues ◽  
Histopathological Examination ◽  
Malignant Neoplasm ◽  
Cervical Lymphadenopathy ◽  
Neck Region ◽  
Histopathological Diagnosis ◽  
Female Ratio ◽  
Head And Neck Region

Background: Undifferentiated tumours in the head and neck region are not uncommon. They can arise from different sites like in mucosa as well as in salivary glands, soft tissues or lymph nodes. Histopathological examination plays a central role in the diagnosis but difficulties arise with some tumours which are poorlydifferentiated due to their high inter- and intra-observer variability. In those cases, immunohistochemistry has greatly assisted to diagnose the tumours that cannot be accurately identified using routine histopathological procedures. The correct histopathological diagnosis is essential especially in case of malignant tumourwhere subsequent specific therapy is required. The aim of this study was to determine the role of immunohistochemistry for diagnosing undifferentiated malignancy in the head and neck region. Methods: This cross-sectional study was conducted during July 2014 to June 2015. A total of 35 Bangladeshi patient’s specimens of head and neck swelling were collected from two renowned laboratories in Dhaka city.These cases were diagnosed as undifferentiated tumour in histopathological examination.Standard protocol was followed for immunohistochemistry.Then primary immunohistochemical panel which included the markers for Epithelial CK (AE1/AE3),mesenchymal marker (Vimentin) and lymphoid marker (LCA) were used.The cases which were not resolved by primary immunohistochemistry panel, the second panel was applied for further sub classification (Desmin, Chromogranin, CK20, CEA, CD20, CD30, HMB45, NSE). Based on interpretation of immunohistochemical findings final diagnoses were made.Data analysis was performed using the Statistical Package for the Social Sciences for Windows version 22.0 (SPSS, Chicago, Illinois, USA). Results: A total of 35 undifferentiated tumorsof head-neck region were studied.The mean age was 46.3±17.6 years and male to female ratio was 4.8:1. The majority 13 (37.1%) patient had cervical lymphadenopathy, 11 (31.4%) had neck mass and 4(11.4%) had in nasal/sinonasal mass.Regarding histopathologicalcell types, round cell was 21 (60.0%), spindle cell 6 (17.1%), pleomorphic cells 6(17.1%) and epithelioid cells 2(5.7%). In initial histopathological examination, majority 25(71.4%) were undifferentiated malignant neoplasm, 8(22.8%) were metastatic undifferentiated carcinoma, 1(2.9%) was pleomorphic sarcoma and the remaining 1(2.9%) had malignant adnexal tumour. By application of immunohistochemistry, most (33, 94.3%) of the cases were resolved and the two cases remained unresolved. Among the resolved cases majority (15, 45.5%) were lymphoma, 4(12.1%) were metastatic carcinoma, 3(9.1%) were Ewing’s sarcoma and malignant melanoma were found in 3(9.1%) cases. Conclusion: This study supports that the immunohistochemical technique has a fundamental role in the investigation of undifferentiated tumour origin, to determine the correct guidance for treatment and improving the prognosis for head and neck tumour patients. Birdem Med J 2020; 10(1): 48-53

Intraventricular Hemorrhage

1989 ◽  
Vol 4 (1_suppl) ◽  
pp. S12-S22 ◽  
Author(s):  
Walter C. Allan
Keyword(s):  
Ultrasound Imaging ◽  
Intraventricular Hemorrhage ◽  
Periventricular Leukomalacia ◽  
Prognostic Information ◽  
Germinal Matrix ◽  
The Past ◽  
Pathologic Findings ◽  
The Individual ◽  
Good Agreement

A review of the role of ultrasound imaging in the diagnosis and study of intraventricular hemorrhage is presented. The characteristics of both early and late scans of germinal matrix, intraventricular, and intraparenchymal hemorrhage, as well as periventricular leukomalacia, have been worked out over the past decade. There is good agreement between the images and pathologic findings. A system of classification that recognizes the importance of parenchymal lesions and their evolution is suggested. The ability to perform repeated ultrasound examinations of sick premature infants has allowed the gathering of important information about pathophysiology, natural history, and outcome. In turn, these studies allow better interpretation of ultrasound scans in the individual infant. Using sequential scans when parenchymal lesions are found improves prognostic information. Prevention of intraventricular hemorrhage is still a goal. However, judging from the experience at our institution it may be that the subtle application of principles demonstrated by the study of this problem with ultrasound imaging has already begun to prevent intraventricular hemorrhage in some patients. (J Child Neurol 1989;4:S12- S22).

scholarly journals The role of immunohistochemical evaluation in the diagnosis of malignant mesothelioma of the pleura

2013 ◽  
Vol 70 (11) ◽  
pp. 1010-1014 ◽  
Author(s):  
Milana Panjkovic ◽  
Aleksandra Lovrenski ◽  
Zivka Eri ◽  
Slavica Knezevic-Usaj ◽  
Dragana Tegeltija ◽  
...  
Keyword(s):  
Malignant Pleural Mesothelioma ◽  
Diagnostic Procedure ◽  
Histopathological Examination ◽  
Immunohistochemical Analysis ◽  
Final Diagnosis ◽  
Histopathological Diagnosis ◽  
Pleural Mesothelioma ◽  
Made In

Backround/Aim. The final diagnosis of malignant pleural mesothelioma is made exclusively by histopathological examination of biopsy materials that are routinely complemented by the use of immunohistochemical analysis. The aim of this paper was to determine the significance of immunohistochemical analysis and application of certain antibodies in the diagnosis of malignant pleural mesothelioma. Methods. This retrospective analysis included clinical data of 32 patients with the histopathological diagnosis of malignant pleural mesothelioma made in the period 2004-2009 at the Institute for Pulmonary Diseases in Sremska Kamenica. The material was processed and analyzed at the Center for Pathology. Results. CK5/6 was positive, in 63% of the cases calretinin, in 94% and HBME-1 in 80% of the cases. CK7 was positive in 78%, and EMA in 83% of the cases. All the cases (100%) were negative for TTF-1, CEA, CD20, desmin and MOC31. Conclusion. Immunohistochemistry has become an essential diagnostic procedure for the diagnosis and determination of the type of malignant pleural mesothelioma, and due to the lack of individual antibodies a combination of antibody with different sensitivity and specificity is in use today.

scholarly journals Skin Adnexal Tumors: A study of 26 cases

2020 ◽  
Vol 7 (11) ◽  
pp. A538-544
Author(s):  
Vidya Viswanathan ◽  
Arpana Dharwadkar ◽  
Shruti Vimal ◽  
Parul Bhandari ◽  
Aditi Malhotra ◽  
...  
Keyword(s):  
Prospective Study ◽  
Histopathological Examination ◽  
Single Case ◽  
Accurate Diagnosis ◽  
Histopathological Diagnosis ◽  
Clinical Correlation ◽  
Rare Tumours ◽  
Skin Biopsies ◽  
Benign Tumours ◽  
Adnexal Tumors

Background: Skin adnexal tumours are a category of rare tumours. They usually present as painless nodules and papules. The diagnosis of these tumours poses a challenge, because there is usually a discrepancy in clinical and histopathological diagnosis. Aims: To study the skin biopsies received in our department and compare their clinical and histopathological diagnosis. Material and methods: Prospective study of skin biopsies received in our department over a period of 1 year. The biopsies were processed and stained with haematoxylin and eosin and studied under the light microscope. Results: Out of the 26 cases studied, 25 were found to be benign tumours with a single case of keratoacanthoma. The most common tumour encountered was pilomatricoma and the least common was syringoma. Only four cases showed clinical correlation with histopathological diagnosis. Conclusion: It can be therefore concluded that skin adnexal tumours are rare tumours which need histopathological examination for their accurate diagnosis.

F.N.A.C. AS DIAGNOSTIC TOOL OF PAROTID TUMORS AND ASSOCIATED PITFALLS IN CORRELATION WITH HISTOPATHOLOGY

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Bhawana Pant ◽  
Sanjay Gaur ◽  
Prabhat Pant
Keyword(s):  
Preoperative Diagnosis ◽  
Histopathological Examination ◽  
Clinical Information ◽  
Final Diagnosis ◽  
Needle Aspiration ◽  
Histopathological Diagnosis ◽  
Cytological Diagnosis ◽  
Tertiary Referral Centre ◽  
Clear Cut ◽  
Parotid Tumors

F.NA.C has been used for ages as a safe and economical tool for fast preoperative diagnosis of parotid tumors. It has certain pitfall which sometimes leads to misdiagnosis and consequently it may have affect on treatment of the tumors. Keeping in view of the diverse classification of parotid tumors’ information from cytology should be combined with radiology as well as clinical diagnosis. Aim: To discuss some cases where there was discrepancy between cytological diagnosis and histopathological result and also suggest measures to improve the efficacy of F.N.A.C. Material and methods: The study includes 50 cases of parotid tumours who presented to the  department of ENT at Government medical college Haldwani which is a tertiary referral centre during 2009 to 2016. Only adult patients were included and inflammatory swelling were excluded from the study. All patients evaluated  Contrast enhanced computerized tomography(CECT) and  Magnetic resonance imaging (MRI) followed by Fine needle aspiration cytology .Preoperative diagnosis was made upon the findings of the above investigations and different types of  parotid surgeries  were done. . Final diagnosis was made on  histopathological  examination. Result :The most common tumour  came out to be pleomorphic adenoma (23 cases-46%) followed by mucoepidermoid carcinoma(12cases-24%). In ten  cases there was no clear cut  association between cytological diagnosis and final histopathological diagnosis. Conclusion: FNAC is highly sensitive and specific technique for diagnosis of many salivary gland swellings. FNAC can be used preoperatively to avoid unnecessary surgery and biopsy. Details of clinical information and radiologic features may help the pathologist to arrive at the appropriate diagnosis and reduce false interpretation. Pitfalls may also occur with improper technique of FNAC which can be overcome by proper caution.

scholarly journals Manipulation of Quercetin and Melatonin in the Down-Regulation of HIF-1α, HSP-70 and VEGF Pathways in Rat’s Kidneys Induced by Hypoxic Stress

Dose-Response ◽  
2020 ◽  
Vol 18 (3) ◽  
pp. 155932582094979
Author(s):  
Aliah R. Alshanwani ◽  
Sameerah Shaheen ◽  
Laila M. Faddah ◽  
Ahlam M. Alhusaini ◽  
Hanaa M. Ali ◽  
...  
Keyword(s):  
Inflammatory Responses ◽  
Histopathological Examination ◽  
Hemoglobin Concentration ◽  
Vascular Endothelial ◽  
Hsp 70 ◽  
Reactive Protein ◽  
Defensive Role ◽  
Factor Α ◽  
Endothelial Growth Factor

Hypoxia may lead to inflammatory responses by numerous signaling pathways. This investigation intended to inspect the defensive role of Quercetin (Quer) and/ or Melatonin (Mel) against reno toxicity induced by Sodium nitrite (Sod ntr). Sod ntr injection significantly decreased blood hemoglobin concentration (Hb) with a concurrent increase in serum tumor necrosis factor- α, interleukin-6, C-reactive protein, creatinine, and urea levels. Over protein-expression of vascular endothelial growth factor and heat shock, protein-70 and mRNA of HIF-1α were also observed. Pretreatment of the Sod ntr- injected rats with the aforementioned antioxidants; either alone or together significantly improved such parameters. Histopathological examination reinforced the previous results. It was concluded that the combined administration of Quer and Mel may be useful as a potential therapy against renal injury induced by Sod ntr. HIF-1α and HSP-70 are implicated in the induction of hypoxia and its treatment.

scholarly journals Cavitation Bubble Cloud Break-Off Mechanisms at Micro-Channels

Fluids ◽  
2021 ◽  
Vol 6 (6) ◽  
pp. 215
Author(s):  
Paul McGinn ◽  
Daniel Pearce ◽  
Yannis Hardalupas ◽  
Alex Taylor ◽  
Konstantina Vogiatzaki
Keyword(s):  
Cavitation Bubble ◽  
Cavitation Inception ◽  
Wave Dynamics ◽  
Bubble Cloud ◽  
Cloud Dynamics ◽  
Micro Channels ◽  
Physical Insight ◽  
Cloud Process ◽  
Good Agreement

This paper provides new physical insight into the coupling between flow dynamics and cavitation bubble cloud behaviour at conditions relevant to both cavitation inception and the more complex phenomenon of flow “choking” using a multiphase compressible framework. Understanding the cavitation bubble cloud process and the parameters that determine its break-off frequency is important for control of phenomena such as structure vibration and erosion. Initially, the role of the pressure waves in the flow development is investigated. We highlight the differences between “physical” and “artificial” numerical waves by comparing cases with different boundary and differencing schemes. We analyse in detail the prediction of the coupling of flow and cavitation dynamics in a micro-channel 20 m high containing Diesel at pressure differences 7 MPa and 8.5 MPa, corresponding to cavitation inception and "choking" conditions respectively. The results have a very good agreement with experimental data and demonstrate that pressure wave dynamics, rather than the “re-entrant jet dynamics” suggested by previous studies, determine the characteristics of the bubble cloud dynamics under “choking” conditions.

scholarly journals Theoretical Insight into the Reversal of Chemoselectivity in Diels-Alder Reactions of α,β-Unsaturated Aldehydes and Ketones Catalyzed by Brønsted and Lewis Acids

Organics ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 38-49
Author(s):  
Lakhdar Benhamed ◽  
Sidi Mohamed Mekelleche ◽  
Wafaa Benchouk
Keyword(s):  
Lewis Acids ◽  
Major Product ◽  
Diels Alder ◽  
Unsaturated Ketone ◽  
Unsaturated Aldehydes ◽  
Aldehydes And Ketones ◽  
Theoretical Insight ◽  
Insight Into ◽  
Good Agreement

Experimentally, a reversal of chemoselectivity has been observed in catalyzed Diels–Alder reactions of α,β-unsaturated aldehydes (e.g., (2E)-but-2-enal) and ketones (e.g., 2-hexen-4-one) with cyclopentadiene. Indeed, using the triflimidic Brønsted acid Tf2NH as catalyst, the reaction gave a Diels–Alder adduct derived from α,β-unsaturated ketone as a major product. On the other hand, the use of tris(pentafluorophenyl)borane B(C6F5)3 bulky Lewis acid as catalyst gave mainly the cycloadduct of α,β-unsaturated aldehyde as a major product. Our aim in the present work is to put in evidence the role of the catalyst in the reversal of the chemoselectivity of the catalyzed Diels–Alder reactions of (2E)-but-2-enal and 2-Hexen-4-one with cyclopentadiene. The calculations were performed at the ωB97XD/6-311G(d,p) level of theory and the solvent effects of dichloromethane were taken into account using the PCM solvation model. The obtained results are in good agreement with experimental outcomes.

scholarly journals Structural and Functional Imaging in Glioma Management

Neurosurgery ◽  
2020 ◽  
Author(s):  
Bledi C Brahimaj ◽  
Ryan B Kochanski ◽  
John J Pearce ◽  
Melike Guryildirim ◽  
Carter S Gerard ◽  
...  
Keyword(s):  
Diffusion Tensor ◽  
Imaging Modalities ◽  
Hemispheric Dominance ◽  
Tumor Control ◽  
Histopathological Diagnosis ◽  
Glioma Surgery ◽  
Multiple Modalities ◽  
Advantages And Disadvantages ◽  
Multiple Imaging

Abstract The goal of glioma surgery is maximal safe resection in order to provide optimal tumor control and survival benefit to the patient. There are multiple imaging modalities beyond traditional contrast-enhanced magnetic resonance imaging (MRI) that have been incorporated into the preoperative workup of patients presenting with gliomas. The aim of these imaging modalities is to identify cortical and subcortical areas of eloquence, and their relationship to the lesion. In this article, multiple modalities are described with an emphasis on the underlying technology, clinical utilization, advantages, and disadvantages of each. functional MRI and its role in identifying hemispheric dominance and areas of language and motor are discussed. The nuances of magnetoencephalography and transcranial magnetic stimulation in localization of eloquent cortex are examined, as well as the role of diffusion tensor imaging in defining normal white matter tracts in glioma surgery. Lastly, we highlight the role of stimulated Raman spectroscopy in intraoperative histopathological diagnosis of tissue to guide tumor resection. Tumors may shift the normal arrangement of functional anatomy in the brain; thus, utilization of multiple modalities may be helpful in operative planning and patient counseling for successful surgery.

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