{"title":"Cartilage Forming Tumors of the Skeleton.","authors":"Julio A Diaz-Perez, Andrew E Rosenberg","doi":"10.1097/PAP.0000000000000475","DOIUrl":"10.1097/PAP.0000000000000475","url":null,"abstract":"<p><p>Cartilage-forming tumors are a broad and diverse group of neoplasms frequently affecting the skeleton. Distinguishing between the members of this group is important because of significant differences in treatment and prognosis. Accurate diagnosis can be challenging because of similarities in their clinical, radiographic, and pathologic features. Immunohistochemistry and molecular tools are helpful in select instances. Therefore, careful evaluation and correlation of these features are essential in arriving at the correct diagnosis and appropriate patient management. This review provides an overview of the current literature, emphasizing helpful features in diagnosis.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"132-146"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mesenchymal Tumors of the Tubular Gastrointestinal Tract (Non-GIST): The GI Pathologist's Approach.","authors":"Bence P Kővári, Gregory Y Lauwers","doi":"10.1097/PAP.0000000000000469","DOIUrl":"10.1097/PAP.0000000000000469","url":null,"abstract":"<p><p>Mesenchymal neoplasms of the gastrointestinal tract are rare compared with epithelial lesions. However, over the past few decades, the increasing volume of gastrointestinal endoscopy has expedited the recognition of several novel entities with varying clinical significance. Its spectrum extends from reactive changes and benign neoplasms to highly aggressive sarcomas. At the malignant end of the spectrum, the importance of correctly diagnosing these tumors is underscored by the specific therapeutic implications available for some tumor types (eg, tyrosine kinase inhibitors for gastrointestinal stromal tumors) that allow personalized treatments. Benign lesions frequently surface among routine polypectomy specimens, sometimes offering diagnostic challenges. However, precise classification is the only way to avoid prognostic uncertainty and overtreatment, and to recognize possible syndromic associations. Hereby, we offer a pragmatic review of the topic from the gastrointestinal pathologist's perspective, who, although more accustomed to epithelial neoplasms, can use an algorithmic approach to diagnose mesenchymal entities successfully.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"110-131"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Giant Cell-Rich Tumors of the Skeleton.","authors":"Julio A Diaz-Perez, Andrew E Rosenberg","doi":"10.1097/PAP.0000000000000477","DOIUrl":"10.1097/PAP.0000000000000477","url":null,"abstract":"<p><p>The accurate diagnosis of giant cell-rich tumors of bone is challenging, especially in limited tissue samples. This diverse group of neoplasms have similar and often ambiguous clinical presentations, radiologic features, and morphologic characteristics. During the last decade, the discovery of pathogenic recurrent genetic alterations has allowed the development of immunohistochemical surrogate markers and FISH assays that can help differentiate the entities of this broad group from one another. The correct diagnosis of these neoplasms is essential in the management of the affected patients.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"157-167"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mesenchymal Tumors of the Human Body: A Targeted Practical Review (Part II).","authors":"Andrew Rosenberg, Andre Pinto","doi":"10.1097/PAP.0000000000000490","DOIUrl":"https://doi.org/10.1097/PAP.0000000000000490","url":null,"abstract":"","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":"32 2","pages":"109"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pediatric Mesenchymal Tumors.","authors":"Omar Aljuboori, Ali G Saad","doi":"10.1097/PAP.0000000000000480","DOIUrl":"10.1097/PAP.0000000000000480","url":null,"abstract":"<p><p>Vascular, fibrous/myofibroblastic, and myogenic tumors account for the majority of mesenchymal tumors in children. These tumors often show significant overlap in morphology and immunophenotype posing diagnostic difficulties and, thus, their classification remains challenging. Recent advances in immunohistochemistry have proved helpful in identifying a specific line of differentiation in some tumors, but other tumors remain difficult to classify. Molecular investigations have provided an existing tool to better understand the pathogenesis of some of these tumors and, in some cases like the EWING family of tumors, expanded the classification resulting in the emergence of previously unknown tumors. Some of these tumors are currently diagnosed according to their underlying molecular abnormality, such as CIC -rearranged sarcoma, BCOR -rearranged sarcoma, etc. This review focuses on the common mesenchymal neoplasms of the pediatric population with emphasis on the salient histologic features, immunoprofile, and molecular characteristics. For practical purposes, the latter are summarized in Supplemental Table 1, Supplemental Digital Content 1, http://links.lww.com/PAP/A46 .</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"180-192"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lipomatous Neoplasms of Soft Tissue: A Contemporary Review.","authors":"Kshitij Arora, Andrew E Rosenberg","doi":"10.1097/PAP.0000000000000468","DOIUrl":"10.1097/PAP.0000000000000468","url":null,"abstract":"<p><p>This review summarizes the clinicopathologic features of various lipomatous tumors of soft tissue and addresses some recent conceptual issues relating to adipocytic neoplasms, such as atypical spindle cell/pleomorphic lipomatous tumor and myxoid pleomorphic liposarcoma, and provides an update on the molecular aspects of these tumors. Recent advances in cytogenetic characterization and classification of lipomatous tumors are reviewed, and the genetic importance of distinct chromosomal aberrations are briefly discussed.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"147-156"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rare Liver Diseases With Near-Normal Histology: A Review Focusing on Metabolic, Storage, and Inclusion Disorders.","authors":"Xiaotang Du, Hanlin L Wang","doi":"10.1097/PAP.0000000000000488","DOIUrl":"https://doi.org/10.1097/PAP.0000000000000488","url":null,"abstract":"<p><p>Despite the growing availability of noninvasive and faster diagnostic modalities, biopsy remains an important tool in the diagnosis and management of liver diseases. However, it is not uncommon that liver biopsies reveal normal or near normal histologic findings in patients with abnormal liver biochemistries, elevated autoantibodies, clinical findings suggestive of portal hypertension, systemic autoimmune or inflammatory diseases, hepatomegaly, cirrhosis by imaging, or other indications. These scenarios present significant diagnostic challenges and are rarely discussed in detail in the literature or textbooks. This article aims to provide a comprehensive review of a group of selected rare liver diseases, with a focus on metabolic, storage and inclusion disorders, that may exhibit a near-normal histology on biopsy. By recognizing subtle histologic features and correlating with clinical history, laboratory results and imaging findings, it is often possible to narrow down the differential diagnosis. In many cases, this integrative approach can yield a definitive diagnosis, allowing for tailored treatment and better patient outcomes.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Steatotic Liver Disease: Navigating Pathologic Features, Diagnostic Challenges, and Emerging Insights.","authors":"Jingjing Jiao, Xuchen Zhang","doi":"10.1097/PAP.0000000000000483","DOIUrl":"https://doi.org/10.1097/PAP.0000000000000483","url":null,"abstract":"<p><p>Steatotic liver disease (SLD) is now used as an overarching category encompassing five subcategories: metabolic dysfunction-associated steatotic liver disease (MASLD), metabolic and alcohol related/associated liver disease (MetALD), alcohol-related/associated liver disease (ALD), SLD with specific etiology, and cryptogenic SLD. This review summarizes foundational and recent advances in the histologic evaluation of SLD, including common pathologic features across all subcategories, distinctions associated with different etiologies, scoring and grading systems, and the evolution of digital pathology techniques for SLD assessment.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Typing of Vulvar Squamous Cell Carcinoma: Why it is Important?","authors":"Mona Alfaraidi, C Blake Gilks, Lynn Hoang","doi":"10.1097/PAP.0000000000000466","DOIUrl":"10.1097/PAP.0000000000000466","url":null,"abstract":"<p><p>The classification of vulvar squamous cell carcinoma (VSCC), as in endometrial cancer, has shifted from the histology-based descriptors toward molecular-based identifiers. Recently, it has been reported that there are 3 genetically distinct and clinically significant subtypes of VSCC: HPV-associated VSCC, HPV-independent/p53 wild-type VSCC, and HPV-independent/p53-mutated VSCC. Each group has different prognostic implications as well as response to treatment, thus reinforcing the need for this 3-tier molecular classification. This molecular subtyping can easily be done on vulvar biopsies using p16 and p53 immunohistochemistry stains to further improve risk prediction and individualized treatment decisions, leading to better patient outcomes.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":" ","pages":"20-29"},"PeriodicalIF":5.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Risk Stratification of Miscellaneous Uterine Mesenchymal Neoplasms: The Role of Morphology, Immunohistochemistry, and Molecular Testing.","authors":"Nicholas Ladwig, Baris Boyraz","doi":"10.1097/PAP.0000000000000479","DOIUrl":"https://doi.org/10.1097/PAP.0000000000000479","url":null,"abstract":"<p><p>Uterine mesenchymal tumors are a diverse group of tumors that can display a broad range of morphologic, immunohistochemical, and molecular profiles and are associated with varied clinical behaviors. In recent years, they have increasingly been classified by their underlying molecular alterations, leading to a more precise separation of diagnostic entities. As their diagnostic criteria have been refined, so too have the features that can be used to predict clinical outcomes. This review includes a discussion of uterine inflammatory myofibroblastic tumors, perivascular epithelioid cell tumors (PEComa), and uterine tumors resembling ovarian sex cord tumors, with a focus on updates on their clinical behavior and tools for risk stratification to identify malignant tumors. In addition, we discuss the importance of using an integrated approach when classifying uterine mesenchymal tumors to improve diagnostic accuracy and guide clinical management.</p>","PeriodicalId":7305,"journal":{"name":"Advances In Anatomic Pathology","volume":"32 1","pages":"57-69"},"PeriodicalIF":5.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}