Pathology of mesothelioma

Kouki Inai1

  • 1Department of Pathology, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, Japan. koinai@hiroshima-u.ac.jp

Insights

Mesothelioma incidence is rising in Japan due to past asbestos exposure. Accurate diagnosis requires careful gross examination and immunohistochemistry to ensure patient compensation and relief.

Area of Science:

  • Oncology
  • Pathology
  • Environmental Health

Background:

  • The incidence of mesothelioma, a rare cancer, is increasing in Japan.
  • This rise is linked to significant asbestos importation between 1960 and 1975.
  • Accurate diagnosis is crucial for patient compensation and relief.

Purpose of the Study:

  • To highlight the diagnostic challenges of mesothelioma.
  • To emphasize the importance of gross findings and histological examination.
  • To underscore the role of immunohistochemistry in accurate mesothelioma diagnosis.

Main Methods:

  • Review of mesothelioma classification and diagnostic criteria.
  • Discussion of histological subtypes including epithelioid, sarcomatoid, biphasic, and desmoplastic types.
  • Emphasis on the utility and selection of immunohistochemical markers.

Main Results:

  • Mesothelioma diagnosis is complex due to diverse presentations and differential diagnoses.
  • Histological examination must be preceded by confirmation of tumor location and gross findings.
  • Careful selection and comprehensive assessment of immunohistochemical stains are vital.

Conclusions:

  • Accurate pathological diagnosis of mesothelioma is critical for patient welfare and access to benefits.
  • Clinicians and pathologists must collaborate to enhance diagnostic accuracy.
  • Improved diagnostic strategies are needed to address the increasing mesothelioma burden.

Related Concept Videos

Pleural Disorders: Types and Brief Description01:30

Pleural Disorders: Types and Brief Description

The pleura is a vital part of the respiratory system. It's a double-layered membrane surrounding the lungs and lining the chest cavity. The two layers of the pleura are:
Pleura of the Lungs01:13

Pleura of the Lungs

The lungs are nestled in a cavity, shielded by the pleura. The pleura, a form of serous membrane, wraps around each lung. This membrane arrangement consists of two layers: the visceral and parietal pleurae. The visceral pleura lines the surface of the lungIn contrast, the parietal pleura is the outer layer and contacts to the thoracic wall, the mediastinum, and the diaphragm. The hilum is the point of connection between the visceral and parietal layers. The space between the parietal and...
Pneumothorax II: Pathophysiology01:08

Pneumothorax II: Pathophysiology

Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance between...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Barrett Esophagus-I: Introduction01:21

Barrett Esophagus-I: Introduction

Barrett's esophagus is a medical condition where the esophageal mucosa is significantly damaged by stomach acid or other digestive fluids, often due to long-term exposure associated with gastroesophageal reflux disease (GERD). In GERD, a weakened or abnormally relaxed lower esophageal sphincter allows stomach acid to flow persistently into the esophagus.
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more similar...
Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation