Sarah Ruane, Christian Seghetti, Jonathan Shanks, Adrienne Flanagan
{"title":"Sarcomatoid plasma cell tumour: a rare entity","authors":"Sarah Ruane, Christian Seghetti, Jonathan Shanks, Adrienne Flanagan","doi":"10.1016/j.mpdhp.2025.03.006","DOIUrl":"10.1016/j.mpdhp.2025.03.006","url":null,"abstract":"<div><div>Sarcomatoid plasma cell tumours are rare entities, and often present histopathologists with great diagnostic difficulty as they can exhibit a wide range of morphological and immunohistochemical profiles. Herein we present a case report of a 76-year-old man, with an enlarging knee mass, in whom an open biopsy showed solid sheets of pleomorphic cells with plasmacytoid, epithelioid and spindled morphology. Cytokeratin, melanocytic and mesenchymal markers were negative, so a provisional diagnosis of undifferentiated pleomorphic sarcoma (UPS), grade 3 was suggested. However, upon tertiary review of the CD138, there was focal weak positivity, triggering further haematological work up, including immunoglobulin heavy chain gene analysis which ultimately detected a heavy chain gene rearrangement. Thus, a diagnosis of a sarcomatoid plasma cell tumour was made. This case demonstrates the importance having plasma cell tumours within histopathologist's differential diagnoses when posed with a sarcomatoid tumour. It also highlights the need for judicious interpretation of IHC, and the use of a wide panel of IHC to ensure that correct histopathological diagnoses are made.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 5","pages":"Pages 300-303"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integrating histopathology and epidemiology to explore cancer aetiology and survival","authors":"Kezia Gaitskell","doi":"10.1016/j.mpdhp.2025.03.005","DOIUrl":"10.1016/j.mpdhp.2025.03.005","url":null,"abstract":"<div><div>Cancer epidemiology involves using large population studies to describe disease patterns and investigate factors associated with cancer incidence and survival. As the classification of cancers grows ever more complex, with subtypes defined by both conventional histopathological features and novel molecular techniques, it is becoming increasingly important to take account of histopathology in cancer epidemiology research. This review discusses selected examples of where appropriate integration of histopathology into clinical trials and observational epidemiological studies has enabled clinically-important insights into cancer aetiology and survival, including: identifying drugs which are effective in specific molecularly-defined cancer subtypes; demonstrating the value of histopathological variables in predicting survival in breast and ovarian cancers; gaining novel insights into contrasting risk factors for histological types of oesophageal cancer; and using epidemiology to complement histopathology in strengthening the evidence base for the origins and prevention of ovarian cancer. Work is ongoing to integrate histopathology data, including digital slides, into large population health resources such as the 100,000 Genomes Project and the UK Biobank cohort, which will eventually provide rich and complex datasets for exploring histopathology-related questions on a population level. However, expert clinical pathology involvement will be essential to ensure this future work remains scientifically robust and clinically relevant.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 5","pages":"Pages 290-299"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Academic training pathways in histopathology: practical perspectives","authors":"Rosalin A Cooper","doi":"10.1016/j.mpdhp.2025.03.004","DOIUrl":"10.1016/j.mpdhp.2025.03.004","url":null,"abstract":"<div><div>Clinical academics are uniquely well-placed to drive the translation of novel research-derived insights into human health and disease towards direct improvements in clinical practice. The Integrated Academic Training (IAT) Programme provides a structured training pathway for aspiring clinical academics, allowing residents to undertake research from the earliest stages of medical training. Despite this, pursuing academic training in Histopathology poses distinct challenges and there are a declining number of academic pathologists in senior posts. It is therefore critical that Histopathology residents are encouraged to explore academic training opportunities. In this article I outline academic pathways - including those within and beyond the IAT programme - residents may wish to consider.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 5","pages":"Pages 284-289"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sharon Ruane, Korsuk Sirinukunwattana, Anna Kotanska, Alan Aberdeen
{"title":"Developing AI-powered tools for histopathology: opportunities, challenges and new friends along the way","authors":"Sharon Ruane, Korsuk Sirinukunwattana, Anna Kotanska, Alan Aberdeen","doi":"10.1016/j.mpdhp.2025.03.003","DOIUrl":"10.1016/j.mpdhp.2025.03.003","url":null,"abstract":"<div><div>Advancements in slide digitization and artificial intelligence (AI) offer immense transformative potential for pathology. While much focus is placed on AI's potential to automate tasks and standardize assessments, its most significant impact may come from uncovering novel tissue-based biomarkers and deepening our understanding of disease. Properly developed and validated AI-based tools could improve the quantification of known biomarkers, identify novel tissue-based biomarkers beyond human perception, and enable inter-sample comparisons to reveal disease subtypes and heterogeneity. This article draws on our practical experience working with pathologists to develop AI-based algorithms for assessing bone marrow in patients with blood cancer. We provide an overview of approaches to AI model development from perspectives typically of most interest to our pathologist collaborators: the data requirements and the resulting model interpretability. We discuss the limitations of the current manual assessment of histopathology samples and the opportunities provided by AI-based approaches. We then address major challenges in the field and discuss how an interdisciplinary approach combining expertise across disciplines is essential to maximizing the potential of AI-powered pathology tools.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 5","pages":"Pages 277-283"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transforming pathology into digital pathology: highway to hell or stairway to heaven?","authors":"Rainer Grobholz, Andrew Janowczyk, Inti Zlobec","doi":"10.1016/j.mpdhp.2025.04.002","DOIUrl":"10.1016/j.mpdhp.2025.04.002","url":null,"abstract":"<div><div>Digital Pathology (DP) is revolutionizing diagnostic surgical pathology, transitioning from traditional microscopy to digital workflows that enhance diagnostic accuracy, streamline processes, and enable cost efficiency. While fully digitized laboratories demonstrate improved efficiency and engagement, adoption remains uneven globally due to infrastructure, cost, and organizational barriers. As a result, European and Asian institutions demonstrate adoption of DP with varying strategies tailored to resource availability and goals. Here we highlight important issues when planning and implementing DP systems. Successful implementation requires robust IT infrastructure (server, random access memory, network speed), including integrated image management and laboratory information systems, and scalable storage solutions. Selecting the appropriate scanners and optimizing workflows are critical, guided by specific institutional needs such as slide volume, turnaround times, and digitization scope. Financially, DP demands significant initial investment but offers long-term benefits in operational efficiency, cost savings, and workforce optimization. Image analysis integration and national initiatives are key drivers for DP adoption, addressing diagnostic challenges and fostering collaboration. Overcoming obstacles such as high costs, technical complexity, and resistance from pathologists is essential. As technology advances and costs decrease, DP is poised to transform pathology with improved diagnostic workflows, quality control, and accessibility.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 7","pages":"Pages 410-415"},"PeriodicalIF":0.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Podocyte infolding glomerulopathy: a rare entity","authors":"Anastasiya Kret, Ali Al-Omari, Bart Wagner","doi":"10.1016/j.mpdhp.2025.04.008","DOIUrl":"10.1016/j.mpdhp.2025.04.008","url":null,"abstract":"<div><div>A female in her 30s presented with worsening lower limb swelling. Her past medical history included primary hypothyroidism, learning difficulties and an atrial septal defect. She was found to have a nephrotic syndrome and was referred to Nephrology with worsening oedema and proteinuria. The initial blood workup showed a mildly elevated serum C3 level and a polyclonal increase in serum IgM level. Renal biopsy was performed which on H&E demonstrated glomeruli with mild mesangial hypercellularity and prominent capillary walls. Electron microscopy showed severe podocyte foot processes effacement and unusual podocyte inclusions which were protruding into the glomerular basement membrane. She was diagnosed with minimal change disease. The exact nature of these peculiar podocyte inclusions remained unknown until the entity of podocyte infolding glomerulopathy (PIG) was published in the English language literature in 2008. In retrospect, we believe the changes observed in our case were due to PIG.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 7","pages":"Pages 444-446"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gabriel Wasinger, Maximilian C Koeller, Eva Compérat
{"title":"Pathology in the artificial intelligence era: practical insights for immunohistochemistry and molecular pathology","authors":"Gabriel Wasinger, Maximilian C Koeller, Eva Compérat","doi":"10.1016/j.mpdhp.2025.04.003","DOIUrl":"10.1016/j.mpdhp.2025.04.003","url":null,"abstract":"<div><div>Artificial intelligence (AI) is driving a revolution in pathology, transforming traditional workflows and addressing critical challenges in the field. This review highlights the integration of AI into immunohistochemistry (IHC) and molecular pathology (MP), where its potential to enhance diagnostic accuracy, efficiency, and reproducibility is becoming increasingly evident. In IHC, AI tools offer solutions to limitations such as subjective biomarker scoring, interobserver variability, and growing workloads by enabling automated and consistent analysis of diagnostic and predictive markers. Similarly, in MP, AI addresses challenges in tumor annotation, genetic mutation interpretation and prediction, and integration of multidimensional data to streamline workflows and enhance precision medicine. By combining computational power with pathologists' expertise, AI holds the promise of reshaping pathology into a more efficient, reliable, and scalable discipline. However, continued efforts in validation, transparency, and cost optimization will be crucial to fully realize AI's transformative potential in clinical pathology.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 7","pages":"Pages 416-423"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Schistosomiasis: extensive urinary bladder infiltration in an unusual case of suspected cancer","authors":"Caroline Cartlidge, Selina Bhattarai","doi":"10.1016/j.mpdhp.2025.04.006","DOIUrl":"10.1016/j.mpdhp.2025.04.006","url":null,"abstract":"<div><div>We present a case of a teenage boy with haematuria who underwent a trans urethral removal of bladder tumour (TURBT) for multiple solid bladder lesions with sandy patches. Investigations led to a diagnosis of schistosomiasis. The clinical, radiological, macroscopic, and microscopic histological findings are highlighted. We discuss the complex parasitic life cycle of Schistosoma and the well evidenced link between schistosomiasis and bladder cancer, specifically high-grade squamous cell carcinoma.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 7","pages":"Pages 438-440"},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Decoding liver biopsies: a pattern-based approach","authors":"Nemencio Ronquillo, Monica T Garcia-Buitrago","doi":"10.1016/j.mpdhp.2025.03.010","DOIUrl":"10.1016/j.mpdhp.2025.03.010","url":null,"abstract":"<div><div>The histological evaluation of liver biopsies is a crucial component in the diagnosis and management of a wide range of liver diseases. This process, often complex and detailed, requires a systematic, stepwise approach. Initially, pathologists must identify the overall injury pattern at low magnification, providing a foundation for further investigation. Once the injury pattern is recognized, it is essential to carefully examine the biopsy for distinctive microscopic features that may provide additional diagnostic clues. Many hepatic injury patterns are linked to well-established differential diagnoses, which help guide the diagnostic process. The assessment of a liver biopsy extends beyond simply identifying injury patterns. It requires a thoughtful integration of pathological findings, differential diagnoses, the patient's clinical presentation, as well as relevant laboratory tests and imaging studies. This comprehensive approach is essential, as it offers invaluable insights into the underlying etiology of the liver disease. In this review, we will focus on the most commonly encountered hepatic injury patterns. By enhancing the diagnostic accuracy and ensuring a thorough interpretation of liver biopsies, pathologists can significantly contribute to the effective management and treatment of liver disorders.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 6","pages":"Pages 325-339"},"PeriodicalIF":0.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gallbladder pathology: unveiling the latest breakthroughs","authors":"Ashwin S Akki, Daniela S Allende","doi":"10.1016/j.mpdhp.2025.03.009","DOIUrl":"10.1016/j.mpdhp.2025.03.009","url":null,"abstract":"<div><div>The gallbladder may be affected by a number of pathologic processes resulting in varied clinical presentations. While inflammatory conditions of the gallbladder especially acute and chronic cholecystitis are more common, advanced neoplasms can be aggressive with an abysmal five-year survival. Accurate and timely diagnoses of these pathologies promote effective clinical management. This review summaries the key disease processes affecting the gallbladder and recent updates in the understanding of these entities.</div></div>","PeriodicalId":39961,"journal":{"name":"Diagnostic Histopathology","volume":"31 6","pages":"Pages 311-324"},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}