Immunohistochemistry or IHC
Malignant mesothelioma of the tunica vaginalis testis: A case report
Oncology Letters 2026 March 4 [Link] Yuanchen Lu, Junjun Miu, Zhongru Fan, Zheng Zhi, Lei He, Junpeng Deng, Xianhua Shao, Jingqi Hua, Yichen Qian, Jianjun Xie Abstract Malignant mesothelioma of the tunica vaginalis testis (MMTVT) is a rare pathological entity. The present report describes the case of a patient who presented with insidious-onset right lower…
Read MoreMoving Beyond Morphology: Toward a Morpho-Molecular Classification of Pleural Mesothelioma
Journal of Thoracic Oncology 2026 February 20 [Link] Gabrielle Drevet, Lipika Kalson, Laurane Mangé, Francoise Galateau-Salle, Arnaud Scherpereel, Lara Chalabreysse, Julien Mazières, Luka Brcic, Nicolas Alcala, Jean-Michel Maury, Lynnette Fernandez-Cuesta, Matthieu Foll Abstract Despite recent advances in the treatment of pleural mesothelioma, it remains a challenging and heterogeneous disease, with limited options for patients. Survival…
Read MorePleural Fluid Cytology-Histology Correlation in Patients With Malignant Pleural Mesothelioma: A Series of 26 Cases
Cytopathology 2026 February 20 [Link] John Findley, Matthew Demetrious, Lucas Yan, Lei Yan Abstract Background: To understand the efficacy of pleural effusion cytology in the diagnosis of malignant mesothelioma, we conducted this retrospective study to review the pleural fluid cytologies of patients diagnosed on concurrent/recent pleural biopsy histology. The clinicopathologic features and common cytomorphology were…
Read MoreBAP-1 in the diagnosis of malignant pleural mesothelioma
Respiratory Medicine and Research 2025 November 28 [Link] Irene Sansano, Ana Vázquez, Oscar Persiva, Marc Simó, Leire Sánchez, Pilar Montoya, Carme Dinarès, Carmen Alemán Abstract Background: The diagnosis of malignant pleural mesothelioma (MPM) can be challenging for clinicians and pathologists. Patients and methods: This study included all patients diagnosed with pleural mesothelioma between October 2013…
Read MoreThe specificity of HEG1 as mesothelioma marker depends on the differential diagnosis
Virchows Archiv 2026 March [Link] Ben Davidson, Lara Maria Stričak, Arild Holth, Annette Torgunrud, Jeremias Wohlschlaeger, Martin Tötsch , Assia Bassarova Abstract The objective of this study was to analyze the diagnostic role of HEG homolog 1 (HEG1) in cancers affecting the serosal cavities. HEG1 protein expression by immunohistochemistry was analyzed in 534 specimens (341…
Read MorePrognostic value and clinical significance of tumoral PD-L1 and stromal α-SMA expression in diffuse pleural mesothelioma
Neoplasma 2026 February [Link] Yeqi Sun, Lan Li, Lei Cai, Jihua Yang, Jun Qian, Fajiu Wang, Lifeng Wang Abstract Diffuse pleural mesothelioma (PM) is a rare malignant neoplasm with an extremely poor prognosis. Prognostic assessment remains challenging, highlighting the urgent need for reliable biomarkers to guide precise and effective therapy. Programmed death ligand 1 (PD-L1)…
Read MoreCytopathologic Features of Metastatic Malignant Mesothelioma With SMARCB1 (INI-1) Deficient Diagnosed by Ultrasound-Guided Fine-Needle Aspiration: A Case Report
Diagnostic Cytopathology 2025 December 29 [Link] Jun Yang, Juandi Liu, Jing Jin, Deng Pan, Lei Shao Abstract Malignant mesothelioma (MM) is a rare yet aggressive neoplasm that arises from mesothelial cells lining the thoracic and abdominal cavities, the pericardium, and the tunica testis. Characterized by rapid progression, high invasiveness, and a poor prognosis, MM poses…
Read MoreCytopathologic Features of Metastatic Malignant Mesothelioma With SMARCB1 (INI-1) Deficient Diagnosed by Ultrasound-Guided Fine-Needle Aspiration: A Case Report
Diagnostic Cytopathology 2025 December 29 [Link] Jun Yang, Juandi Liu, Jing Jin, Deng Pan, Lei Shao Abstract Malignant mesothelioma (MM) is a rare yet aggressive neoplasm that arises from mesothelial cells lining the thoracic and abdominal cavities, the pericardium, and the tunica testis. Characterized by rapid progression, high invasiveness, and a poor prognosis, MM poses…
Read MoreMerlin Immunohistochemistry Is Useful in the Differential Diagnosis of Epithelioid Mesothelioma and Reactive Mesothelial Hyperplasia
Pathology International 2026 January [Link] Kohei Aoe, Kei Kushitani, Vishwa Jeet Amatya, Tetsuya Nakagiri, Yoshihiro Miyata, Morihito Okada, Yukio Takeshima Abstract The differential diagnosis of epithelioid mesothelioma and reactive mesothelial hyperplasia can be challenging based on morphology alone, particularly in small specimens. Consequently, the use of ancillary techniques, such as immunohistochemistry for BRCA1-associated protein 1,…
Read MoreDiagnostic potential of a novel immunohistochemical marker, GFPT2, in differentiating mesothelioma from its morphological mimics
Histopathology 2025 December 15 [Link] Jia Wei, Xiaofang Ma, Gang Chen, Yan Wang, Qinhe Fan, Qixing Gong Abstract Aims: Mesothelioma (MESO) is a rare and aggressive tumour originating from mesothelial cells, primarily affecting the pleura and peritoneum. Its diagnosis remains challenging due to non-specific clinical, radiological and histopathological features, compounded by morphological diversity and overlapping…
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