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Related Experiment Video

Updated: Oct 22, 2025

Implantation and Monitoring by PET/CT of an Orthotopic Model of Human Pleural Mesothelioma in Athymic Mice

Implantation and Monitoring by PET/CT of an Orthotopic Model of Human Pleural Mesothelioma in Athymic Mice

Published on: December 21, 2019

Pleural mesothelioma classification-update and challenges.

¹Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA. dacics@upmc.edu.

Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc

|September 1, 2021

Summary

This summary is machine-generated.

Recent updates in pleural mesothelioma classification highlight diagnostic advancements. Immunohistochemistry and FISH for BAP1, MTAP, and CDKN2A improve mesothelioma diagnosis, especially in early stages.

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Published on: October 2, 2015

Area of Science:

Oncology
Pathology
Molecular Diagnostics

Background:

Mesothelial tumors encompass benign, preinvasive, and malignant classifications.
Malignant mesotheliomas, including localized and diffuse types, require precise histological subtyping for prognosis and treatment.
Epithelioid mesotheliomas have undergone significant grading and subtyping revisions in recent WHO classifications.

Purpose of the Study:

To review recent changes in the histological classification of pleural mesothelioma.
To emphasize the importance of ancillary diagnostic studies.
To discuss the molecular characteristics of mesotheliomas.

Main Methods:

Review of current literature on mesothelioma classification and diagnostics.
Focus on immunohistochemistry (IHC) for BAP1 and MTAP.
Application of fluorescence in situ hybridization (FISH) for CDKN2A deletion.

Main Results:

Mesothelioma in situ is now a defined entity requiring specific molecular markers.
Loss of BAP1 or MT via IHC, or CDKN2A homozygous deletion by FISH, are crucial for diagnosis.
These biomarkers enhance diagnostic sensitivity in effusion and limited tissue samples.

Conclusions:

Updated histological classifications and ancillary studies are vital for accurate mesothelioma diagnosis.
Molecular markers significantly aid in identifying mesothelioma, particularly epithelioid subtypes.
Accurate diagnosis based on histology and molecular findings is critical for patient treatment decisions.