scholarly journals Pitfalls and Caveats in Applying Chromogenic Immunostaining to Histopathological Diagnosis

Cells ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1501
Author(s):  
Yutaka Tsutsumi
Keyword(s):  
Review Article ◽  
Behavioral Characteristics ◽  
Histopathological Diagnosis ◽  
Histochemical Technique ◽  
Biological Features ◽  
Trouble Shooting ◽  
Immunohistochemical Markers ◽  
Neoplastic Lesions ◽  
Clinicopathological Correlations ◽  
Labeled Probe

Chromogenic immunohistochemistry (immunostaining using an enzyme-labeled probe) is an essential histochemical technique for analyzing pathogenesis and making a histopathological diagnosis in routine pathology services. In neoplastic lesions, immunohistochemistry allows the study of specific clinical and biological features such as histogenesis, behavioral characteristics, therapeutic targets, and prognostic biomarkers. The needs for appropriate and reproducible methods of immunostaining are prompted by technical development and refinement, commercial availability of a variety of antibodies, advanced applicability of immunohistochemical markers, accelerated analysis of clinicopathological correlations, progress in molecular targeted therapy, and the expectation of advanced histopathological diagnosis. However, immunostaining does have various pitfalls and caveats. Pathologists should learn from previous mistakes and failures and from results indicating false positivity and false negativity. The present review article describes various devices, technical hints, and trouble-shooting guides to keep in mind when performing immunostaining.

scholarly journals Pitfalls and Caveats in Applying Immunostaining to Histopathological Diagnosis

2021 ◽  
Author(s):  
Yutaka Tsutsumi
Keyword(s):  
Target Therapy ◽  
Molecular Target ◽  
Review Article ◽  
Present Review ◽  
Technical Development ◽  
Histopathological Diagnosis ◽  
Histochemical Technique ◽  
Molecular Target Therapy ◽  
Trouble Shooting ◽  
Immunohistochemical Markers

Immunostaining is an essential histochemical technique for analyzing pathogenesis and making a histopathological diagnosis. The needs are prompted by technical development and refinement, commercial availability of a variety of antibodies, deepened knowledge of immunohistochemical markers, accelerated analysis of morphofunctional correlations, progress in molecular target therapy, and the expectation of advanced histopathological diagnosis. However, immunostaining does have various pitfalls and caveats. We should learn from mistakes and failures, as well as from false positivity and false negativity. The present review article describes various devices, technical hints and trouble-shooting guides to keep in mind in performing immunostaining.

scholarly journals Histopathological spectrum of neoplastic and non-neoplastic breast lesions: A three years study in rural tertiary care center.

2020 ◽  
Vol 7 (01) ◽  
pp. 4721-4725
Author(s):  
Dr. Sanjeev Kumar Singh ◽  
Dr. Geeta Maurya ◽  
Dr. Pinki Pandey ◽  
Dr. Rashmi
Keyword(s):  
Invasive Ductal Carcinoma ◽  
Ductal Carcinoma ◽  
Care Center ◽  
Benign Lesion ◽  
Tertiary Care ◽  
Age Distribution ◽  
Morbidity And Mortality ◽  
Histopathological Diagnosis ◽  
Breast Lesions ◽  
Neoplastic Lesions

Background: Breast tumours are very common cause of morbidity and mortality worldwide specially in developing countries. Breast lesions show broad spectrum of disease patterns in respect to benign, malignant, and non-neoplastic. Breast cancer is one of the most frequently occurring cancer among women. Objective: To study the frequency, age distribution, clinical and histological patterns of neoplastic and non-neoplastic lesions of breast in this rural population. Material and methods: This observational study was conducted over a duration of three years. In which we studied 210 cases of breast lesions. Specimens were received in department of pathology. Grossing, tissue processing, staining done according to standard protocol. Haematoxylin and eosin (H&E) stained sections were examined under microscope to categorise different type of lesions in the form of non-neoplastic and neoplastic. Results:  Out of 210 breast lesions, fibroadenoma was the commonest (114 cases) benign lesion. While invasive ductal carcinoma (70 cases) was commonest in malignant category. Non neoplastic lesions stand on third place, study showed 6 cases out of 210 total cases, in which acute mastitis (4 cases) was most common. Benign tumours were mostly seen in 2nd and 3rd decade and malignant tumour mainly in 5th and 6th decade Conclusion: Early histopathological diagnosis of breast lesions is very important to differentiate between benign and malignant lesions. Large number of cases of invasive ductal carcinoma (>33% of all cases) were seen in our study, which is a serious concern. So, generation of awareness among women is need of time to reduce the morbidity and mortality specially in Indian rural setup

HISTOPATHOLOGICAL SPECTRUM OF SKIN LESIONS: A TWO YEAR RETROSPECTIVE STUDY.

2021 ◽  
pp. 26-29
Author(s):  
Shruti Shemawat ◽  
Sakshi Apurva ◽  
D.P Soni ◽  
Saurabh Soni
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Relative Frequency ◽  
Malignant Tumors ◽  
Skin Lesions ◽  
Benign Tumors ◽  
Histopathological Diagnosis ◽  
Neoplastic Lesions ◽  
Skin Biopsies ◽  
Age And Sex

INTRODUCTION: The skin being largest organ of the body has vast spectrum of disorders which can be difcult to diagnose correctly solely on the basis of clinical features. Hence histopathological examination is necessary to categorise skin lesions. The aim was to study relative frequency of various skin lesions and distribution of these lesions according to age and sex. METHODS: This is a retrospective descriptive hospital based study. The skin biopsies samples which came in the duration of two years from January 2019 to December 2020 at the Department of Pathology, Sardar Patel Medical college and associated group of hospitals, Bikaner, Rajasthan were taken in this study. All skin biopsies that showed denite histopathological diagnosis were included. After proper xing and staining procedures these lesions were examined under light microscopy and categorized as non-neoplastic and neoplastic. Relative frequency of various lesions, distribution of lesions according to age and sex was analyzed. The data collected was tabulated, interpreted and compared with other similar studies. RESULTS: Out of 346 patients, incidence of neoplastic lesions 259 (74.9%) were higher than non-neoplastic lesions 87(25.1%). Males were affected more compared to females with male to female ratio 1.45:1. Non-neoplastic lesions were mostly caused because of infectious etiologies among which leprosy was the most common infection. Keratinocytic tumors 99(52.2%) constituted most common type of neoplastic lesion. Benign tumors 191(73.7%) outnumbered malignant tumors 68(26.3%). The cases of benign tumors were seen more in younger population while that of malignant tumors were seen in older age groups. Among the keratinocytic type of malignant skin tumors squamous cell carcinoma (63.5%) was the most common variant which was followed by basal cell carcinoma 19(36.5%). Male predominance was observed in both squamous cell carcinoma and basal cell carcinoma. CONCLUSION: A wide heterogenesity of skin lesions was observed in the present study . These skin lesions were mostly affecting age group of 10-30 years. Inspite of extensive programmes and research, leprosy and tuberculosis remains a rampant cause of infectious non-neoplastic skin lesions. Sometimes ignorance by patient for a very small appearing skin lesions becomes life threatening. Hence early clinician consultation with proper examination and accurate histopathological diagnosis becomes the mainstay in early treatment and recovery.

scholarly journals Factors associated with use of immunohistochemical markers in the histopathological diagnosis of cutaneous melanocytic lesions

2020 ◽  
Vol 47 (10) ◽  
pp. 896-902
Author(s):  
Caitlin J. May ◽  
Michael W. Piepkorn ◽  
Stevan R. Knezevich ◽  
David E. Elder ◽  
Raymond L. Barnhill ◽  
...  
Keyword(s):  
Histopathological Diagnosis ◽  
Factors Associated ◽  
Immunohistochemical Markers ◽  
Melanocytic Lesions

scholarly journals The role of intraoperative scrape cytology in vertebroplasty

CytoJournal ◽  
2016 ◽  
Vol 13 ◽  
pp. 11 ◽  
Author(s):  
Renuka Venkata Inuganti ◽  
Rami Reddy Mettu ◽  
Harsha Vardhan Surath ◽  
Amarnath Surath
Keyword(s):  
Predictive Value ◽  
Osteoporotic Fractures ◽  
Vertebral Compression Fractures ◽  
Histopathological Diagnosis ◽  
Cytological Examination ◽  
Neoplastic Lesions ◽  
Malignant Lesions ◽  
Scrape Cytology ◽  
Infective Etiology

Aims: To assess the adequacy of intraoperative scrape cytology during percutaneous vertebroplasty by correlating results with corresponding histopathology. Settings and Design: Vertebroplasty is a procedure increasingly used to treat painful vertebral compression fractures. The history and presentation of osteoporotic fractures are straightforward, but difficulty arises in differentiating infective from neoplastic lesions, especially in cases where the magnetic resonance imaging is equivocal. The procedure involves injection of polymethyl methacrylate (bone cement) into the pathological vertebral body and gives dramatic pain relief. It is indicated in osteoporotic and neoplastic lesions but contraindicated in infections. Hence, intraoperative evaluation of a specimen is essential to aid in the decision of performing vertebroplasty. Subjects and Methods: A total of 128 patients with vertebral lesions underwent core biopsy and scrape cytology from June 2006 to June 2015. Based on the findings of cytological examination, malignant lesions were subjected to vertebroplasty. In lesions with infective etiology, vertebroplasty was abandoned and antibiotic or antituberculous therapy started. Results: The overall diagnostic accuracy of scrape cytology was excellent with 97.58% cases correlating with the final histopathological diagnosis. Specificity was 100%, positive predictive value was 100% and negative predictive value was 33.33%. Conclusion: Scrape cytology is a simple, rapid, accurate cytodiagnostic technique and should be routinely utilized in vertebral lesions for intraoperative consultation and decision making during vertebroplasty.

scholarly journals HISTOPATHOLOGICAL STUDY OF BONE LESIONS AT DARBHANGA MEDICAL COLLEGE, LAHERIASARAI, BIHAR.

2021 ◽  
pp. 1-3
Author(s):  
Ragini Kumari ◽  
Kunal Shankar ◽  
Ajit Kumar Chaudhary ◽  
Debarshi Jana
Keyword(s):  
Bone Tumors ◽  
Bone Biopsy ◽  
Correct Diagnosis ◽  
Benign Tumors ◽  
Bone Lesions ◽  
Histopathological Study ◽  
Histopathological Diagnosis ◽  
Male Predominance ◽  
Medical College ◽  
Neoplastic Lesions

Background: A spectrum of pathological bone lesions can be presented in any form from inflammatory to neoplastic conditions. Diagnosis of all bone lesions is made by radiological modalities like plain X-ray, CT scan, MRI and bone scintigraphy. Aim and Objectives: To study histopathological features of bone lesions and correlate them with age, site and type of lesions. Material and Methods: The study was carried out at Department of Pathology associated with Orthopaedics, Darbhanga Medical College, Lahertiasarai, Bihar from April 2020 to November 2020. A total of 102 bone lesions were analyzed. Bone biopsy was performed after detailed clinical and radiological examination. After fixation, decalcification, processing and H&E staining, histopathological diagnosis was made. Results: Out of all 102 cases, 44.11% bone lesions were found between 25-50 years with male predominance. The incidence of non neoplastic lesions was 74.5% and neoplastic lesions were 25.4%. Amongst neoplastic lesions, incidence of benign tumors was 17.64% and malignant tumors were 7.8%. The Tuberculous Osteomyelitis was most common non neoplstic lesion while giant cell tumor and osteochondroma were common among benign tumors and osteosarcoma and Secondary metastasis were common among malignant bone tumors. Conclusion: Though Bone tumors are less common, if viewed in perspective of clinico radiology and histopathology, correct diagnosis can be made.

scholarly journals Surgical Treatment of Odontogenic Keratocyst with Application of Carnoy's Solution: Case Report

2019 ◽  
Vol 21 (2) ◽  
pp. 108
Author(s):  
Adriano Lima Garcia ◽  
Marden José Pereira Ramos Júnior ◽  
Eduvaldo Campos Soares Júnior ◽  
Bruno Reinoso Noronha ◽  
Thiago Iafelice dos Santos ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Treatment Protocol ◽  
Odontogenic Keratocyst ◽  
Histopathological Diagnosis ◽  
Squamous Cells ◽  
Carnoy’S Solution ◽  
Neoplastic Lesions ◽  
Mandibular Body ◽  
Teeth Development

AbstractOdontogenic cysts are benign non-neoplastic lesions that originate from epithelial cells Arachnida-Araneae) community in the process of the teeth development. Among them, the odontogenic keratocyst is a developmental cyst characterized by its epithelium of parakeratinized stratified and aggressive squamous cells as well as infiltrative behavior. Thus, the objective of this study was to describe a clinical case of surgical treatment of odontogenic keratocysts in a 52-year-old female patient, who presented for the treatment of a large lesion in a region of the left mandibular body and angle. After incisional biopsy and installation of a decompression device, the histopathological diagnosis of odontogenic keratocyst was obtained. Subsequently to a period of 9 months with the decompression device in place, a decrease of the lesion was noticed, thus allowing intervention to be performed the excision of the lesion. Thus, the patient was subjected, under general anesthesia, to enucleation of the lesion as the main treatment, with complementary maneuvers of peripheral ostectomy and application of Carnoy solution over the remaining bone bed. After an outpatient follow-up of 16 months, no signs of recurrence of the lesion were observed. The proposed treatment was efficient in removing the keratocyst with minimal surgical morbidities. In conclusion, the treatment protocol was effective and conservative in the surgical management of the lesion, allowing rapid recovery and return of the  function.       Keywords: Bone Cysts. Decompression. Dental Care. ResumoCistos odontogênicos são lesões benignas não-neoplásicas que tem por origem células remanescentes epiteliais do processo de formação do órgão dental. Dentre elas, o queratocisto odontogênico é um cisto de desenvolvimento caracterizado por seu epitélio de células escamosas estratificadas paraqueratinizadas, pelo comportamento agressivo e infiltrativo. Sendo assim, o objetivo desse estudo foi descrever um caso clínico de tratamento cirúrgico do queratocisto odontogênico em uma paciente do gênero feminino de 52 anos de idade, que compareceu para o tratamento de uma lesão de grande porte em região de corpo e ângulo mandibulares à esquerda. Após biópsia incisional e instalação de um dispositivo descompressivo, obteve-se o diagnóstico histopatológico de queratocisto odontogênico. Posteriormente a um período de 9 meses com o dispositivo de descompressão em posição, notou-se uma diminuição da lesão, permitindo assim a execução de intervenção para exérese da lesão. Assim, a paciente foi submetida, sob anestesia geral, à enucleação da lesão como tratamento principal, com manobras complementares de ostectomia periférica e aplicação de solução de Carnoy sobre o leito ósseo remanescente. Após um acompanhamento ambulatorial de 16 meses, não foi observado nenhum sinal de recorrência da lesão. O tratamento proposto foi eficiente em remover o queratocisto com as mínimas morbidades cirúrgicas. Concluindo, o protocolo de tratamento foi efetivo e conservador no manejo cirúrgico da lesão, permitindo rápida recuperação e retorno da função. Palavras-chave: Cistos Ósseos. Descompressão. Assistência Odontológica.

scholarly journals Different Faces of Sinonasal Mass Lesions

2021 ◽  
Vol 28 (3) ◽  
pp. 193-197
Author(s):  
Devika T ◽  
Shubha P Bhat ◽  
Vadisha Srinivas Bhat ◽  
Rajeshwary Aroor ◽  
Satheesh Kumar Bhandary B ◽  
...  
Keyword(s):  
Nasal Cavity ◽  
Clinical Diagnosis ◽  
Clinical Features ◽  
Histopathological Examination ◽  
Nasal Discharge ◽  
Histopathological Diagnosis ◽  
Appropriate Treatment ◽  
Sinonasal Mass ◽  
Wide Range ◽  
Neoplastic Lesions

Introduction Mass in the nasal cavity presents with a wide range of symptoms, when a presumptive diagnosis is often made with the help of imaging and endoscopy. This study focussed on correlating clinical diagnosis with the histopathological diagnosis so that appropriate treatment can be offered to improve the quality of life of the patient. Materials and Methods The study included 120 cases who presented with symptoms and signs of mass in the nasal cavity, undergoing surgery or diagnostic biopsy. They were evaluated with a detailed history and clinical examination, diagnostic nasal endoscopy, and relevant radiological investigations. Histopathological examination of the biopsy of the excised specimen was performed by Haematoxylin and Eosin stain. Special stains and Immunohistochemistry (IHC) were performed whenever indicated. The clinical diagnosis was correlated with histopathological diagnosis. Results Nasal obstruction was the most frequent symptom followed by nasal discharge. Non-neoplastic lesions made up 85% of cases, while16% of cases were proved as neoplastic lesions. Among neoplastic lesions, 7% were benign, and 9% were malignant.  The inflammatory polyp was the most common non-neoplastic lesion. Fischer's exact test showed a correlation between clinical diagnosis and histopathological diagnosis. Non-neoplastic lesions were common in the 4th decade of life; benign lesions were common in the 3rd decade of life, while malignant lesions were common in the 5th decade of life. Conclusion Sinonasal masses present with overlapping clinical features, and sometimes the definite diagnosis is possible only by histopathological examination of the specimen. However, in the presence of characteristic clinical features, accurate clinical diagnosis is possible in most cases, and appropriate treatment can be performed without delay, pending histopathological examination.

scholarly journals Splenic lesions observed in 71 splenectomized dogs: a retrospective study

2016 ◽  
Vol 37 (5) ◽  
pp. 3181
Author(s):  
Elisângela Olegário da Silva ◽  
Giovana Wingeter Di Santis ◽  
Selwyn Arlington Headley ◽  
Ana Paula Frederico Rodrigues Loureiro Bracarense
Keyword(s):  
Retrospective Study ◽  
Exploratory Laparotomy ◽  
Histopathological Diagnosis ◽  
Pathological Findings ◽  
Clinical Methods ◽  
High Incidence ◽  
Neoplastic Lesions ◽  
Nodular Hyperplasia ◽  
Total Splenectomy ◽  
Benign Disorders

The spleen of dogs is frequently affected by disorders that vary from local and systemic origin. The difficulty in associating clinical and gross findings contributes for the choice of total splenectomy as the main treatment, leading to an impairment of the immune and hematopoietic functions. The aim of this study was to evaluate the pathological findings in the spleen of splenectomized dogs during 2008 to 2014 at a Veterinary Teaching Hospital. From the 71 cases analyzed, 97% (69/71) of the dogs were submitted to total splenectomy and 3% (2/71) to partial splenectomy. In 45 (63.4%) of these cases, the histopathological diagnosis was non-neoplastic alterations; only 36.6% (26/71) had a splenic neoplasia. The main non-neoplastic lesions observed were nodular hyperplasia 24.4% (11/45), infarction 22.3% (10/45), and hematoma 20% (9/45). The most frequent tumors were hemangiosarcoma 50% (13/26), histiocytic sarcoma 23% (6/26), and lymphoma 11.5% (3/26). The clinical methods used to diagnose splenic lesions were ultrasonography 88% (63/71), radiography 2.8% (2/71) and exploratory laparotomy 4.2% (3/71). In 4.2% (3/71) the spleen changes were observed during the therapeutic ovariohysterectomy. The results of the present study showed a prevalence of benign disorders in the spleen of splenectomized dogs associated with a high incidence of total splenectomy performed, indicating a difficulty in recognizing the different lesions that can affect the spleen by the veterinarian medical.

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