Localized or locally advanced cervical cancer is treated with a curative intent. Its management requires multidisciplinary expertise and a rigorously structured approach to optimize the probability of success. Initial workup (clinical examination, imaging, pathology) allows precise characterization of the tumour and staging according to TNM and FIGO classifications. Surgical management of early stage cancers, ranging from conization for small tumour to hysterectomy, sometimes including sentinel lymph node biopsy, is based on therapeutic algorithms that take into account stage, pathological criteria (invasion, margins, node involvement) and risk category. Postoperative treatment, when required, includes radiochemotherapy, that can be followed by brachytherapy. In locally advanced cancers, treatment consists of radiochemotherapy followed by uterovaginal brachytherapy and immunotherapy that has recently demonstrated its benefits. Since cervical cancer often develops in young women, its management raises important questions related to fertility and sometimes, to the management of cancer during pregnancy. Finally, although it is not the topic of these recommendations, it is important to highlight the major role of vaccination to avoid the vast majority of these cancers.

Well-differentiated rectal neuroendocrine tumors (rNETs) are among the most common NETs and account for approximately 12-27% of all gastrointestinal NETs in North America. Significant discrepancies persist in the management of NETs regarding surveillance strategies, staging modalities, high-risk features, and criteria for surgical intervention. This guideline updates current practices of stage I-III rectal NETs with the utilization of GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) methodology and Delphi method of consensus among leading experts in the North American region. We found that several technological advances, such as 68Ga- or 64Cu-DOTATATE SSTR PET/CT, and broad adoption of pelvic MRI have improved staging of rNETs, along with modified endoscopic mucosal and submucosal resection and full-thickness excision techniques that demonstrate efficacy and safety for resection. Pivotal long-term outcome studies provide insight into i) risk factors for regional lymph node metastasis, ii) the impact of R1 excision (endoscopic), iii) best practices for intermediate-sized rNETs (11-20 mm), and iv) risk in small rNETs (≤10 mm). Recommendations were developed upon evidence-based conclusions from the GRADE review to define the role of baseline staging with MRI, advanced endoscopy, and transanal endoscopic surgical methods appropriate for T1 rNETs, the role of salvage therapy in cases of R1 resection, and the consideration of pathologic variables to direct definitive treatment and surveillance. We conclude that advances in screening programs and imaging allow for improved detection and staging of rNETs, while long-term outcome studies can better direct patients toward evidence-based treatment management and rectal organ preservation through less radical resection methods.

Living guidelines are developed for selected topic areas with rapidly evolving evidence that drives frequent change in recommended clinical practice. Living guidelines are updated on a regular schedule by a standing expert panel that systematically reviews the health literature on a continuous basis, as described in theASCO Guidelines Methodology Manual. ASCO Living Guidelines follow theASCO Conflict of Interest Policy Implementation for Clinical Practice Guidelines. Living Guidelines and updates are not intended to substitute for independent professional judgment of the treating clinician and do not account for individual variation among patients. See appendix for disclaimers and other important information (Appendix 1 and Appendix 2). Updates are published regularly and can be found atwww.asco.org/genitourinary-cancer-guidelines.

Most primary retroperitoneal soft tissue tumors are malignant, with liposarcomas and leiomyosarcomas being the most common. However, other sarcomas and benign tumors can also occur in this location. Pathologic evaluation of retroperitoneal sarcomas (RPS) presents unique challenges. Sarcomas are a heterogeneous group with overlapping microscopic features, making accurate classification essential for prognosis and evolving targeted therapies. Core biopsies often capture only a small portion of the tumor, which may result in underestimation of key features such as differentiation, necrosis, and proliferation, leading to undergrading. Surgical management is complicated by the RPS's tendency to involve adjacent organs. Resections are often large and en bloc, and formalin fixation can obscure anatomic landmarks, making it difficult to identify and assess true surgical margins. In addition to the standard data elements required for cancer staging, specific pathologic features of RPS should be reported to aid in prognosis and treatment planning. This position paper/consensus statement was developed by members of the Trans-Atlantic Australasian Retroperitoneal Sarcoma Working Group (TARPSWG) based on evidence and expert opinion. A detailed description of specimen handling, specimen sampling, and the inclusion of the key diagnostic elements required for an accurate pathology report are provided. The aim of this manuscript is to offer a comprehensive critical reappraisal of the role of pathologic evaluation of surgical specimens in RPS surgery, as well as to propose a standard pathology report to harmonize reporting and facilitate future data collection and interpretation for future research development.

Retroperitoneal sarcoma (RPS) encompasses a heterogenous group of rare malignancies that develop in the back of the abdomen. For localized primary disease, the mainstay of treatment is surgery. Beyond the primary site, patterns of disease manifestation vary by histologic type and include visceral organ metastasis, as well as intraabdominal multifocal disease. Although cure is extremely rare, some patients may still derive significant benefit from treatment.

In recent months, restrictions have been proposed on the prescription of PARP inhibitors (iPARP) by urologists in metastatic castration-resistant prostate cancer (mCRPC). The Spanish Association of Urology (AEU), its Uro-Oncology Group (GUO), and the presidents of the Regional Urology Associations consider these limitations unjustified from clinical, organizational, legal, or professional perspectives. They unduly restrict the exercise of competencies recognized in the interdisciplinary management of prostate cancer, in line with the training, experience, and current regulations of the specialty. This document argues, from scientific, clinical, and legal standpoints, that urologists are qualified and legally authorized to prescribe and administer iPARP according to current legislation and the official training program. It also advocates a collaborative model centred on the patient's care pathway and based on mutual respect among specialties, ensuring professional autonomy, continuity of care, and equitable access to therapeutic innovation.

Practice-changing clinical trials for novel therapeutic regimens administered in the neoadjuvant setting have been reported for multiple cancer types, bringing this treatment strategy to the forefront for patients with high-risk surgically resectable disease. Previously, tumor-type- or therapy-type-specific scoring systems were used for pathologic response assessment. The goal of this effort is to update, harmonize, and standardize the emerging system(s) for pathologic response assessment and data capture.

This consensus aims to develop a standardised guideline for human epidermal growth factor-2 (HER2) immunohistochemistry interpretation and reporting in Malaysia to support optimal therapeutic decision-making and research compatibility. An expert committee comprising pathologists and oncologists from public, private, and academic institutions convened to review existing international recommendations and taking into the consideration of local healthcare resource variations. The committee aims to harmonise reporting terminology in the reporting of HER2 testing, with emphasis on HER2-low and HER2-ultralow categories. A standardised HER2 reporting is crucial to ensure Malaysian patients benefit equitably from emerging HER2-targeted therapies. We hope this guideline could prepare the national pathology community in leading the evolving landscape of breast cancer management.

Although minimally invasive surgery is widely accepted across surgical disciplines, its role in pancreatic cancer continues to be debated. The objective of the São Paulo Consensus on Minimally Invasive Pancreatic Surgery (MIPS) was to establish consensus statements on the use of MIPS for pancreatic cancer, integrating contemporary evidence and recent advances.

Unresectable stage III non-small cell lung cancer (NSCLC) exhibits substantial heterogeneity and complexity. The landmark LAURA and POLESTAR studies have established a standard therapeutic model involving targeted consolidation therapy with osimertinib or aumolertinib after definitive chemoradiotherapy for NSCLC patients harboring EGFR-sensitive mutations. However, treatment strategies for patients with other driver gene mutations (e.g., ALK fusions, ROS1 rearrangement) still lack robust support from high-level evidence-based medical study. To enhance the standardization of diagnosis and treatment for unresectable stage III driver-positive NSCLC patients, the Radiotherapy Committee of the Chinese Society of Clinical Oncology convened an expert working group. This group identified common clinical practice issues and conducted an in-depth, problem-oriented analysis of domestic and international guidelines alongside evidence-based medical data. Through multiple rounds of comprehensive discussion and expert voting, this consensus was jointly developed. It provides evidence-based recommendations addressing frequently encountered clinical questions regarding unresectable stage III driver-positive NSCLC, aiming to serve as a key reference for clinical practice.

The EAES released guidelines on the role of taTME in the management of rectal cancer in 2022.

Measurable residual disease (MRD) monitoring has become a critical component in the management of acute myeloid leukemia (AML), to inform prognosis, guide therapy, and serve as a key end point in clinical trials. The 2025 update of the MRD guideline provides a comprehensive and refined framework for MRD assessment, aligned with the European LeukemiaNet (ELN) 2022 genetic risk classification. Developed by members of the ELN AML MRD Working Party, the guidelines incorporate expert consensus determined through a 2-stage Delphi round. They address the clinical implementation of MRD methodologies, technical considerations, integration into clinical trials, and future directions. Importantly, MRD recommendations are tailored to individual prognostic and genetic subgroups. A new qualitative MRD response category, designated as optimal, warning, or high risk of treatment failure, has been introduced to facilitate contextual interpretation of the MRD burden and its clinical relevance. Notably, ultrahigh-sensitivity next-generation sequencing-based MRD assessment is now recommended for FLT3 internal tandem duplication-mutated AML after intensive chemotherapy and before allogeneic hematopoietic cell transplantation. A total of 56 recommendations were formulated, with 53 achieving a high level of consensus (≥90%). These updated guidelines represent a major step forward toward harmonizing MRD assessments in AML and enhancing its clinical utility across diverse treatment settings.

Gorlin syndrome (GS) is a rare genetic disorder characterized by a predisposition to developing numerous basal cell carcinomas (BCCs) throughout life. The absence of specific clinical guidelines for managing BCCs in GS has resulted in fragmented care and inconsistent treatment approaches.

Conflicting practice recommendations regarding the grading of intraductal carcinoma of the prostate (IDCP) from two leading uropathology societies, the Genitourinary Pathology Society (GUPS) and the International Society of Urological Pathology (ISUP), are confusing for both pathologists and treating clinicians. The objectives of this consultation were to clarify unresolved issues regarding IDCP and atypical intraductal proliferation (AIP) terminology, diagnostic criteria, grading, and management implications, as well as to develop uniform reporting guidelines for IDCP and AIP, endorsed by both societies. A 32-member expert panel, composed of five core members, 25 expert urological pathologists, and two expert urologists, employed a modified Delphi process consisting of multiple rounds of consultation and voting. These were supplemented by discussions at the 2025 United States and Canadian Academy of Pathologists Annual Meeting to achieve expert consensus (defined as at least 67% agreement). Consensus was reached on several key issues. IDCP was regarded most commonly as reflecting the retrograde spread of invasive prostate cancer (PCa). IDCP diagnosis should be based on the Guo and Epstein criteria, supported by basal cell immunohistochemistry in cases that are difficult to distinguish from invasive PCa. The term AIP should be used only in equivocal proliferations where IDCP is favoured but the criteria are not fully met, and these should be reported as 'AIP, suspicious for IDCP'. In the presence of invasive PCa, IDCP should generally be incorporated into Gleason grading irrespective of Grade Group (GG). However, a significant minority (30%) favoured excluding IDCP from the Gleason score if the invasive component was solely Gleason pattern (GP) 3. Pure IDCP (not associated with invasive PCa) and AIP, suspicious for IDCP, should not be graded. IDCP should not be incorporated in the grading of invasive PCa when it is spatially distinct from invasive PCa. A second opinion from a senior or dedicated GU pathologist and discussion within a multidisciplinary management setting should be considered, in the rare settings of pure IDCP or GP3 + IDCP (formerly GG1 + IDCP scenario). This joint GUPS-ISUP consultation provides unified recommendations for the diagnosis, terminology, grading, and reporting of IDCP and AIP, and will pave the way for the development of future IDCP/AIP WHO guidelines. Their adoption should reduce interobserver variation, facilitate consistent communication with clinicians, and improve patient management.

This revision work was commissioned by the Japanese Dermatological Association (JDA) and was undertaken by a committee of experts in related fields. The committee prepared comprehensive, evidence-based guidelines by thoroughly reviewing and systematizing a wide range of literature on cutaneous squamous cell carcinoma. The literature search was conducted by the Japan Medical Library Association. Recommendations were prepared using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) scheme. These guidelines were prepared in accordance with the "Minds Clinical Practice Guideline Preparation Manual 2020 ver. 3.0". Six clinical questions were established, and corresponding recommendations were described for each. CQs addressed the following: (1) the treatment of early lesions, (2) the possibility of reduction surgery for primary lesions, (3) the significance of sentinel lymph node biopsy, (4) the possibility of non-surgical treatment as an alternative to surgical treatment, (5) follow-ups after treatment, and (6) drug treatment for advanced stages. We are confident that the JDA Clinical Practice Guidelines for Cutaneous Squamous Cell Carcinoma will contribute to improving the treatment of cutaneous squamous cell carcinoma in Japan and worldwide.

The management of large B-cell lymphomas (LBCL) has undergone major changes over the last 5 years. These changes reflect the availability of new therapies (immunotherapies, cell therapies, targeted molecules), but also a better compartmentalization of the entities and their specific clinical characteristics. Numerous first-, second- and third-line therapeutic strategies are available, and each practitioner is committed to selecting the treatment that offers the best balance between efficacy and toxicity. Advances in the understanding of LBCL biology, coupled with improvements in diagnostic and monitoring tools and therapeutic approaches, have significantly enhanced patient outcomes in recent years. In this article, we present a set of pragmatic guidelines developed by the LYSA (Lymphoma Study Association) for the management of LBCL. These guidelines address key aspects of diagnosis, staging, response evaluation, and treatment, integrating the latest evidence from clinical trials, expert consensus, and real-world practice. They aim to provide clinicians with a clear, practical framework to optimize care for patients with LBCL, ensuring that the best available evidence is translated into clinical practice.

Gastric cancer is one of the leading causes of cancer mortality in Chile. To optimize early detection and surveillance of gastric premalignant conditions, the Chilean Association of Digestive Endoscopy (ACHED), together with the Chilean Society of Gastroenterology, updated its 2014 clinical guideline. Using the AGREE II methodology, multidisciplinary working groups conducted systematic reviews in PubMed, Cochrane, and Scielo through December 2024. Recommendations were agreed upon via a Delphi panel (≥80% agreement) and graded according to GRADE, assessing evidence quality and recommendation strength. An expert panel of Chilean and international gastroenterology, endoscopy and pathology specialists reviewed the evidence and reached consensus to issue recommendations for opportunistic gastric cancer screening and surveillance using upper GI endoscopy in adults. These recommendations are feasible to implement in Chile and other Latin American countries with a high incidence of gastric cancer that have the necessary resources available. They complement any future efforts at population screening and aim to improve early detection and prognosis of gastric cancer in high-risk populations.

It has been five years since the last version of the clinical practice guidelines for the management of adult diffuse gliomas was published by the Asian Glioma Genome Atlas (AGGA). Significant progress and revisions have occurred in the diagnosis and treatment of adult diffuse gliomas in recent years. In response to these updates, the joint guideline committee of the Chinese Glioma Cooperative Group (CGCG), the Society for Neuro-Oncology of China (SNO-China), and the Chinese Brain Cancer Association (CBCA) has revised the clinical practice guidelines. This updated guideline emphasizes molecular and pathological diagnostics, as well as the primary treatment modalities of surgery, radiotherapy, chemotherapy, and targeted therapy. Additionally, we have incorporated findings from recent clinical trials of new therapies to align with cutting-edge treatment strategies. This guideline is designed to serve as a practical resource for all professionals involved in managing adult diffuse glioma patients, while also providing valuable information for insurance companies and other institutions responsible for regulating cancer care costs in China and beyond.

This guideline provides a comprehensive overview of the management of localized rectal cancer, highlighting recent major advances in therapeutic strategies. Accurate staging remains essential, as it informs treatment decisions and facilitates risk assessment. A pivotal development in rectal cancer treatment is the adoption of total neoadjuvant therapy (TNT), which has demonstrated improved tumor response, reduced risk of systemic recurrence, and enhanced survival outcomes. This approach enables a "watch-and-wait" strategy and conservative management that may render surgery unnecessary and preserves rectal function in patients who achieve a complete clinical response. By emphasizing a structured approach to staging, multidisciplinary evaluation, and innovative treatment pathways, this guideline aims to improve outcomes while minimizing the morbidity associated with rectal cancer treatment.