Histopathology最新文献

{"title":"Threonine and tyrosine kinase (TTK) mRNA and protein expression in breast cancer; prognostic significance in the neoadjuvant setting","authors":"Abrar Ashi,&nbsp;Aeshah A Awaji,&nbsp;Jacquelyn Bond,&nbsp;Colin A Johnson,&nbsp;Abeer M Shaaban,&nbsp;Sandra M Bell","doi":"10.1111/his.15399","DOIUrl":"10.1111/his.15399","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Threonine and tyrosine kinase (TTK) is up-regulated in triple-negative breast cancer (TNBC), yet its expression in patients undergoing neoadjuvant chemotherapy (NACT) remains unexplored. This investigation aims to assess TTK protein expression in treatment-naïve pre-treatment cores and paired pre- and post-NACT breast cancer (BC) cohorts, as well as its correlation with microcephaly 1 (MCPH1) protein expression.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>Transcriptomic data were sourced from the Gene Expression Omnibus microarray database for mRNA expression analysis. TTK protein expression was evaluated using immunohistochemistry staining, employing receiver operating characteristic curve analysis to determine an optimal TTK expression cut-off point. The association between TTK expression, clinicopathological parameters and survival outcomes was examined. Additionally, MCPH1 protein expression was assessed in a pilot study. Analysis revealed a significantly elevated TTK mRNA expression in BC tissue compared to normal breast tissue, with high TTK mRNA levels predicting reduced overall survival. Notably, TTK protein expression increased significantly post-NACT in a paired cohort. Conversely, decreased TTK protein expression pre-NACT was correlated with improved overall survival.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>High TTK and low MCPH1 protein expression was significantly correlated, highlighting TTK's potential as a biomarker for BC and a therapeutic target for MCPH1-deficient cancer cells.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"916-932"},"PeriodicalIF":3.9,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/his.15399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142948030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Significance of location and extent of perineural invasion in early-stage oral cavity squamous cell carcinoma","authors":"Shima Mohamed,&nbsp;Deirdre Callanan,&nbsp;Patrick Sheahan,&nbsp;Linda Feeley","doi":"10.1111/his.15406","DOIUrl":"https://doi.org/10.1111/his.15406","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Perineural invasion (PNI) is associated with survival in oral cavity squamous cell carcinoma (OCSCC). There is evidence to suggest that PNI location and extent may be of additional significance. The primary aim of this study was to evaluate the prognostic ability of PNI, including location and extent, in early-stage OCSCC.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>This was a retrospective study, with the main cohort comprising of 129 patients with pT1/T2 pN0/Nx TNM8 OCSCC. Slides were re-reviewed in cases reported as having PNI to classify location as intratumoural (IT) and/or extratumoural (ET) and extent as unifocal (UF) or multifocal (MF). Univariate and multivariate analysis assessing impact of pathological features on survival outcomes was performed. On multivariate analysis, IT PNI was significantly associated with locoregional recurrence-free survival (LRS) [odds ratio = 5.69, 95% confidence interval (CI) = 1.50–21.63, <i>P</i> = 0.01]. Disease-specific survival (DSS) and overall survival (OS) were non-significant. In comparison, ET PNI was predictive of LRS (odds ratio = 20.57, 95% CI = 3.48–121.73, <i>P</i> = 0.001), DSS (odds ratio = 40.47, 95% CI = 5.17–316.96, <i>P</i> = 0.0004) and OS (odds ratio = 11.92, 95% CI = 2.18–65.22, <i>P</i> = 0.004). Multifocal PNI was significant on univariate analysis for all three outcome parameters evaluated, but these findings were not maintained on multivariate assessment.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Extratumoural PNI is strongly predictive of survival outcomes, including OS, in early-stage OCSCC. These findings support the reporting of PNI location as a mandatory data element. The impact of PNI extent requires further study.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"993-1000"},"PeriodicalIF":3.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/his.15406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paratesticular/inguinal SMARCB1/INI1 deficient carcinomas with yolk sac tumour-like differentiation are aggressive somatic malignancies","authors":"Kemal Kosemehmetoglu,&nbsp;Kubra Katipoglu,&nbsp;Marie-Anne Brundler,&nbsp;Kiril Trpkov,&nbsp;Asli Yilmaz","doi":"10.1111/his.15410","DOIUrl":"https://doi.org/10.1111/his.15410","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Extragonadal yolk sac tumour (YST) is rare, and may present a diagnostic challenge. YST differentiation was recently reported in some somatically derived tumours in the sinonasal location and in the female genital tract, together with a SMARCB1/INI1 loss. We report two paratesticular/inguinal tumours with striking morphological and immunohistochemical similarities with YST, further expanding the spectrum of extragonadal tumours with YST-like morphology and SMARCB1/INI1 loss.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>Patients were 13- and 27-year-old males who presented with a 1-cm inguinal mass and a 4.6-cm spermatic cord mass, respectively. Both neoplasms showed histological and immunohistochemical features in keeping with YST. Immunohistochemically, the neoplastic cells were diffusely positive for AE1/AE3, spalt-like transcription factor 4 (SALL4) and glypican-3; alpha-fetoprotein (AFP) was positive in one of two tumours. S100, SMA, CD34 and brachyury were negative in both tumours. Pre-operative serum AFP levels were normal in both patients. Although the initial diagnostic consideration was extragonadal YST, the diagnostic work-up revealed complete loss of SMARCB1/INI1 on immunohistochemistry and absence of isochromosome 12p by fluorescence <i>in-situ</i> hybridisation. Both patients had an aggressive clinical course with rapid disease progression and widespread metastatic spread.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Somatically derived tumours with YST-like morphology at an extragonadal location present a potential diagnostic pitfall. This type of neoplasm has not been previously reported in males at this location. Therefore, SMARCB1/INI1 should be included in the immunohistochemistry work-up of any neoplasm that morphologically resembles YST at an extragonadal site, even in the setting of positive germ cell tumour markers, as the correct diagnosis has prognostic and therapeutic implications.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 7","pages":"1044-1052"},"PeriodicalIF":3.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897080","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":"Further confirmation of a highly prognostic grading scheme based upon tumour budding and cell cluster size in cervical squamous cell carcinoma","authors":"Wenwen Zhang,&nbsp;Yiling Song,&nbsp;Haiyan Shi,&nbsp;Bingjian Lu","doi":"10.1111/his.15404","DOIUrl":"10.1111/his.15404","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Our study aimed to further confirm the clinical significance of the tumour budding activity and cell nest size-based (TBNS) grading scheme in cervical squamous cell carcinomas (SCC).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>We applied the TBNS system to assess the prognostic value in an institutional cohort of well-annotated cervical SCC consisting of 312 consecutive cases with surgical resection, no neoadjuvant chemotherapy and higher than stage pT1a. We found that high budding activity, single cell and TBNS grade 3 were more frequently associated with a decreased overall survival (OS) time and disease-free survival (DFS) time (<i>P</i> &lt; 0.001) and several other clinicopathological factors, including lymphovascular space invasion, lymph node metastasis, advanced Federation of Gynecology and Obstetrics (FIGO) stage and deep invasion of the cervical wall (&gt; 2/3) (<i>P</i> &lt; 0.05). On multivariate analysis, TBNS grade 3 was an adverse indicator for OS and DFS independently of age, invasion of the cervical wall and FIGO stage (<i>P</i> &lt; 0.05). By comparison, the conventional three-tiered grading system was not associated with OS and DFS in cervical SCC (<i>P</i> &gt; 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our study further confirms that the TBNS grading scheme is robust in prognostic assessment in cervical SCC that outperforms the conventional three-tiered grading system. It is applicable to add TBNS grade into routine diagnostic practice.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"967-978"},"PeriodicalIF":3.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894181","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":"Expression of claudin-18.2 in cholangiocarcinoma: a comprehensive immunohistochemical analysis from a German tertiary centre","authors":"Maximilian N Kinzler,&nbsp;Steffen Gretser,&nbsp;Falko Schulze,&nbsp;Katrin Bankov,&nbsp;Nada Abedin,&nbsp;Wolf O Bechstein,&nbsp;Fabian Finkelmeier,&nbsp;Stefan Zeuzem,&nbsp;Henning Reis,&nbsp;Peter J. Wild,&nbsp;Dirk Walter","doi":"10.1111/his.15407","DOIUrl":"10.1111/his.15407","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Anti-claudin-18.2 (CLDN18.2) therapy was recently approved for the treatment of gastric or gastro-oesophageal junction adenocarcinoma. The aim of the present study was to investigate the expression of CLDN18.2 in cholangiocarcinoma (CCA) to determine whether there is a subgroup of patients who might also benefit from anti-CLDN18.2 therapy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>A tissue microarray (TMA) cohort of all CCA patients who underwent surgical resection with curative intent between August 2005 and December 2021 at University Hospital Frankfurt were immunohistochemically evaluated using the VENTANA^® CLDN18 (43-14A) antibody. Tumour positivity for CLDN18.2 was determined as follows: ≥ 75% of tumour cells with moderate-to-strong CLDN18 membranous staining. In total, 160 patients with surgically resected CCA were suitable for immunohistochemistry (IHC) analysis. Of the patients, 13.1% (<i>n</i> = 21) showed moderate to strong membranous staining of VENTANA^® CLDN18 antibody, while 86.9% (<i>n</i> = 139) were negative. Subtype analysis revealed strong differences in CLDN18 expression. Positive staining of CLDN18 could be observed in 26.5% (<i>n</i> = nine of 34) and 7.4% (<i>n</i> = seven of 95) of the perihilar (pCCA) and intrahepatic (iCCA) subgroup, respectively. CCA patients with CLDN18 expression had a more frequently intraoperative finding of distant metastasis (<i>P</i> = 0.002), lymph node metastasis (<i>P</i> = 0.008) and positive perineural invasion (Pn1) status (<i>P</i> = 0.022).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The present study suggests that a subset of patients with CCA exhibited a marked expression of CLDN18.2. These findings underline the need to perform a clinical study evaluating the efficacy of anti-CLDN18.2 therapy in patients suffering from CCA.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 4","pages":"640-646"},"PeriodicalIF":3.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/his.15407","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk prediction criteria for the primary hepatic perivascular epithelioid cell tumour family, including angiomyolipoma: analysis of 132 cases with a literature review","authors":"Youngeun Yoo,&nbsp;Jihun Kim,&nbsp;In Hye Song","doi":"10.1111/his.15405","DOIUrl":"10.1111/his.15405","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The hepatic perivascular epithelioid cell tumour (PEComa), including angiomyolipoma, exhibits diverse morphology and clinical behaviour; however, its prognostic features remain undefined. This study aimed to investigate its histological features and prognostic factors.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>In total, 132 patients were included. Clinical data and histopathological slides were assessed along with the p53 and Ki-67 immunohistochemistry. Targeted next-generation sequencing was performed in three cases. Based on the histologic subtypes, 7 (10%), 36 (51%), 13 (18%), and 15 (21%) patients were classified as inflammatory angiomyolipoma, conventional angiomyolipoma, epithelioid angiomyolipoma, and PEComa not otherwise specified (NOS), respectively, among 71 patients who underwent surgical resection. We proposed the risk prediction criteria after defining primary tumour size ≥7 cm, infiltrative border, mitotic rate &gt;1/10 mm², necrosis, vascular invasion, and PEComa NOS as worrisome features, as follows: high-risk: ≥3 worrisome features; intermediate-risk: 1–2 features; low-risk: none of the features. Applying these criteria, 4 (6%), 31 (44%), and 36 (51%) patients were classified into high-, intermediate-, and low-risk groups, respectively. One patient each in the high-risk (25%) and intermediate-risk (3%) groups developed peritoneal metastases and intrahepatic recurrence, respectively, whereas none in the low-risk group showed disease progression. A literature review of clinically malignant hepatic PEComa family tumours was conducted, and upon application of our criteria, 62% (16/26) of the patients were classified as high-risk and 35% (9/26) as intermediate- or high-risk.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Our risk prediction criteria can effectively predict the clinical outcomes in primary hepatic PEComa.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"979-992"},"PeriodicalIF":3.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894196","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":"HIV, measles, and syphilis: histopathologic characteristics of lymphatic system involvement of three reemerging infectious diseases.","authors":"Aaron Auerbach, John J Schmieg, Mary Klassen, Ann Nelson, Nadine S Aguilera","doi":"10.1111/his.15408","DOIUrl":"https://doi.org/10.1111/his.15408","url":null,"abstract":"<p><p>The resurgence of measles, syphilis, and HIV presents a significant threat to global health, especially in the wake of the COVID-19 pandemic. These three infections involve lymph nodes and have unique pathologic findings in lymph nodes. We explore the pathological and clinical characteristics of these infections, focusing on their involvement of lymph nodes and their pathologic diagnosis in lymph node specimens. For HIV, lymph nodes are sites of viral replication and reservoirs, and the disease demonstrates multiple patterns within lymph nodes. The recent increase in measles, due in part to declining vaccination rates, signals the need for pathologists to be able to identify the characteristic Warthin-Finkeldey cells present in lymph node specimens. Syphilis, a reemerging sexually transmitted infection, often presents with lymphadenopathy and can mimic other conditions, complicating clinical diagnosis. By revisiting well-established findings and presenting new insights into the histopathological changes within lymphoid tissues, this review provides essential knowledge for pathologists and clinicians to improve diagnostic accuracy and treatment outcomes.</p>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":" ","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894182","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":"Diagnostic interobserver variability of atypia assessment in columnar cell lesions among a group of expert breast pathologists in the United Kingdom and the Republic of Ireland, on behalf of the UK national coordinating committee for breast pathology","authors":"Soha El Sheikh,&nbsp;Mohamed A Mansour,&nbsp;Elena Provenzano,&nbsp;Abeer Shaaban,&nbsp;Andrew Lee,&nbsp;Yasmeen Mir,&nbsp;Rebecca McMillan-Slater,&nbsp;Pauline Carder,&nbsp;Silvana Di Palma,&nbsp;Clinton Boyd,&nbsp;Purnima Makhija,&nbsp;Madhuri Warren,&nbsp;Susan Pritchard,&nbsp;Rahul Deb,&nbsp;Ian Ellis,&nbsp;Emad Rakha,&nbsp;Cecily Quinn,&nbsp;Sarah Pinder","doi":"10.1111/his.15402","DOIUrl":"10.1111/his.15402","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Atypical ductal hyperplasia and flat epithelial atypia (FEA) have defined diagnostic criteria, yet there is variation in the interpretation of these criteria, particularly when the atypia is present in a background of columnar cell lesions (CCLs). This study focuses upon cases which are especially challenging or difficult to classify reproducibly according to existing criteria.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and results</h3>\u0000 \u0000 <p>Thirteen breast pathology experts were asked to classify 10 challenging cases with CLLs as atypical or non-atypical. Interobserver agreement was calculated. After two consensus meetings, which explored the morphological features underlying the decision, the cases were reassessed. Finally, a photomontage was compiled as a visual aid for practising pathologists representing a range of straightforward cases and others where subjective interpretation causes disagreement within current diagnostic criteria. Overall interobserver agreement and pairwise pathologist agreement coefficients were both in the fair range (<i>κ</i> = 0.22 and <i>κ</i> = 0.3–0.4, respectively). This improved to moderate or substantial agreement (<i>κ</i> = 0.6–0.8) after two consensus meetings. The most controversial cases were atypical cases that lacked the regular rounded nuclei of FEA, and non-atypical cases that had florid architectural changes bordering on architectural atypia.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Among expert breast pathologists, interobserver agreement in the diagnosis of atypia in CCLs was higher in cases with classical features of FEA. Consensus was difficult to achieve if nuclear or architectural atypia fell outside the classical definition of FEA, suggesting that this category does not encompass the range of low-grade cytological atypia in CLLs. This study provides rationale for expanding the definition of atypia in CCLs other than FEA.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"953-966"},"PeriodicalIF":3.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/his.15402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ossifying fibromyxoid tumours with lipomatous and cartilaginous differentiation: A diagnostic pitfall","authors":"Natálie Klubíčková,&nbsp;Steven Billings,&nbsp;Josephine K T Dermawan,&nbsp;Jeremy F Molligan,&nbsp;Karen Fritchie","doi":"10.1111/his.15396","DOIUrl":"10.1111/his.15396","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Ossifying fibromyxoid tumour is a rare mesenchymal neoplasm predominantly affecting adults characterised by a multinodular growth pattern and the presence of a fibrous pseudocapsule with areas of ossification. Prompted by the recognition of a non-ossifying ossifying fibromyxoid tumour with lipomatous differentiation which caused diagnostic difficulty, we sought to further explore cases of ossifying fibromyxoid tumour with non-osseous heterologous elements.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>A search of our institutional and consultation archives revealed three additional cases that demonstrated lipomatous components and two cases with cartilaginous differentiation. RNA-sequencing revealed fusions involving <i>PHF1</i> (<i>n</i> = 4) or <i>EPC1</i> (<i>n</i> = 1) in all (five of five) cases tested, including <i>EPC1::PHC1</i> and <i>JAZF1::PHF1</i> fusions, which have not been reported before in ossifying fibromyxoid tumour.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>These six cases expand the histomorphological spectrum of ossifying fibromyxoid tumour, introducing lipomatous differentiation as a hitherto undocumented feature. Awareness of these rare variants will ensure appropriate diagnosis and clinical management.</p>\u0000 </section>\u0000 </div>","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"891-899"},"PeriodicalIF":3.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/his.15396","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correspondence response to: can patient ancestry influence molecular classifications in myeloid neoplasms?","authors":"Gregor Hoermann,&nbsp;Yuri Fedoriw,&nbsp;Joseph D. Khoury","doi":"10.1111/his.15403","DOIUrl":"10.1111/his.15403","url":null,"abstract":"","PeriodicalId":13219,"journal":{"name":"Histopathology","volume":"86 6","pages":"1016-1017"},"PeriodicalIF":3.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864088","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}