Pathology
Malignant mesothelioma is a rare cancer that is more common in men and is closely associated with exposure to asbestos, a material widely used in construction and industry, particularly during the 1970s and 1980s.
This tumor arises from mesothelial cells, which line the body’s major serous cavities:
- Pleura (the membrane lining the lungs): 60 to 70% of cases
- Peritoneum (the membrane lining the abdominal organs): 30 to 35% of cases
- Pericardium (the membrane lining the heart): a very rare form
Benign tumors can also arise from the mesothelium (e.g. adenomatoid tumors and benign cystic mesothelioma). These are usually treated with surgery alone and do not require additional therapy.
The Numbers in Italy
According to the AIRTUM registry (Italian Association of Cancer Registries), approximately 1,779 new cases of mesothelioma were diagnosed in Italy in 2024 (1,328 men and 451 women).
Symptoms
Pleural Mesothelioma
In most cases, the initial symptoms are related to pleural effusion (accumulation of fluid in the pleural cavity) and include:
- Shortness of breath (dyspnea)
- Persistent cough
- Pain on one side of the chest or in the lower back
General symptoms such as muscle weakness and weight loss may also occur.
Peritoneal Mesothelioma
The most common symptoms include:
- Abdominal pain
- Weight loss
- Nausea and vomiting
In some cases, the abdomen may increase in volume because of fluid accumulation in the peritoneal cavity (ascites).
Risk Factors
The main cause of pleural mesothelioma is exposure to asbestos. The increase in cases observed in recent decades is largely related to the widespread use of this material since the 1950s in building construction, shipyards, the production of car brakes and clutches, and the manufacture of textiles and paper products. The interval between exposure and disease onset (latency period) is typically 40 to 50 years. In Italy, the marketing of asbestos-containing products has been prohibited since 1994.
The risk of developing mesothelioma varies according to:
- Type of fiber (higher with crocidolite)
- Duration of exposure
- Fiber size
Approximately 70% of inhaled fibers are naturally eliminated through the respiratory or intestinal tract. Fibers that remain can penetrate tissues, accumulate in the lower part of the lung, and reach the visceral pleura (the layer in direct contact with the lungs). Over time, pleural hyaline plaques may develop and, in some cases, progress to mesothelioma.
To date, no screening tests are available for the early diagnosis of pleural mesothelioma..
Diagnosis and Examination
Pleurectomy and Lung Decortication
Pleurectomy and lung decortication is a surgical procedure used to treat pleural mesothelioma, a cancer that affects the parietal and visceral pleura, the membranes lining the chest wall and the lungs.
During the procedure, the surgeon removes the entire pleura along with any surrounding tissue affected by the tumor.
The goal of this surgery is to remove as much tumor tissue as possible while preserving the underlying lung, helping to relieve symptoms such as chest pain and pleural effusion (accumulation of fluid in the chest cavity).
In selected cases, the procedure may be extended to include the removal of adjacent organs or structures involved by the disease.
Diaphragm Resection
In selected cases, pleurectomy may be extended to include resection of the diaphragm, as mesothelioma can spread to and infiltrate this muscle, which separates the thoracic and abdominal cavities.
The procedure involves the partial or complete removal of the diaphragm, followed by reconstruction, with or without the use of a prosthetic mesh.
Pericardiectomy
If mesothelioma spreads to the pericardium, the membrane surrounding the heart, pericardiectomy may be required.
This procedure involves the surgical removal of the affected portion of the pericardium, followed by reconstruction using a synthetic or biological prosthesis.
Pneumonectomy
In advanced cases of pleural mesothelioma, when the tumor extensively involves one lung, pneumonectomy may be necessary.
This procedure involves the surgical removal of the entire affected lung in an effort to achieve the most effective local control of the disease.
Hyperthermic Intrathoracic Chemotherapy (HITOC)
Hyperthermic intrathoracic chemotherapy (HITOC) can be performed in conjunction with pleurectomy and lung decortication.
Following surgical removal of the tumor, a chemotherapy solution heated to 41-42°C is circulated directly within the chest cavity for approximately 60 minutes. This approach aims to destroy any remaining cancer cells and enhance local disease control.
Surgical treatment of mesothelioma is typically part of a multimodal treatment strategy, combining surgery with other therapies such as systemic therapy and radiation therapy to improve overall treatment effectiveness and provide a more comprehensive approach to disease management.
The choice of treatment depends on several factors, including the stage and extent of the disease, the patient’s overall health status, and individual preferences.
Types of Pleural Mesothelioma
Based on cellular characteristics, pleural mesothelioma is classified into four histological subtypes:
- Epithelioid: the most common subtype (70 to 85% of cases) and associated with the best prognosis
- Sarcomatoid (Fibrous): approximately 10% of cases
- Mixed (Biphasic): 10 to 25% of cases
- Desmoplastic: less than 2% of cases and the most difficult to diagnose
Therapies
In selected cases, pleural mesothelioma can be treated with a combination of systemic therapy, surgery, and radiation therapy.
Drug treatment remains the main therapeutic option for all patients.
At Candiolo Cancer Institute, patient management is coordinated through the GIC.
Pleurectomy and Lung Decortication
Pleurectomy and lung decortication is a surgical procedure used to treat pleural mesothelioma, a cancer that affects the parietal and visceral pleura, the membranes lining the chest wall and the lungs.
During the procedure, the surgeon removes the entire pleura together with any adjacent tissue involved by the tumor.
The aim of this surgery is to remove the tumor while preserving the underlying lung, helping to relieve symptoms such as chest pain and pleural effusion (accumulation of fluid in the chest cavity).
In selected cases, the procedure may be extended to include the removal of adjacent organs affected by the disease.
Diaphragm Resection
In selected cases, pleurectomy and lung decortication may be extended to include resection of the diaphragm, as mesothelioma can spread to and infiltrate this muscle, which separates the thoracic and abdominal cavities.
The procedure involves the partial or complete removal of the diaphragm, followed by reconstruction, with or without the use of a prosthetic implant.
Pericardiectomy
If mesothelioma spreads to the pericardium, the membrane surrounding the heart, pericardiectomy may be required.
This procedure involves the surgical removal of the affected pericardium, followed by reconstruction using a synthetic or biological prosthesis.
Pneumonectomy
In very advanced cases of pleural mesothelioma, when the tumor extensively involves one lung, pneumonectomy may be necessary.
This procedure involves the surgical removal of the entire affected lung as part of the treatment strategy for selected patients.
Hyperthermic Intrathoracic Chemotherapy (HITOC)
Hyperthermic intrathoracic chemotherapy (HITOC) can be performed in conjunction with pleurectomy and lung decortication.
Following surgical removal of the tumor, a chemotherapy solution heated to 41-42°C is circulated directly within the chest cavity for approximately 60 minutes. The aim of this procedure is to destroy any remaining cancer cells and improve local disease control.
Surgical treatment of mesothelioma is typically part of a multimodal approach, combining surgery with other therapies such as systemic therapy and radiation therapy to enhance overall treatment effectiveness and provide more comprehensive disease management.
The choice of treatment depends on several factors, including the stage and extent of the disease, the patient’s overall health status, and individual preferences. Surgical management is determined according to the staging and extent of the tumor.
Surgery
Surgical treatment of mesothelioma is typically part of a multimodal treatment approach, combining surgery with other therapies such as systemic therapy and radiation therapy to improve overall treatment effectiveness and provide more comprehensive disease management.
The choice of treatment depends on several factors, including the stage and extent of the disease, the patient’s overall health status, and individual preferences. The role of surgery is determined by the staging and extent of the tumor.
Pleurectomy and Lung Decortication
This surgery is used to treat pleural mesothelioma, which affects the membrane lining the inner wall of the chest wall and lungs (parietal and visceral pleura).
During pleurectomy, the surgeon removes all of the pleura and surrounding tissue affected by the cancer.
This surgery aims to remove the tumor without removing the underlying lung in order to relieve associated symptoms, such as chest pain and fluid accumulation in the chest (pleural effusion).
Pleurectomy can sometimes be enlarged by removing neighboring organs involved in the disease.
Excision of the diaphragm
Pleurectomy may be expanded to the diaphragmatic muscle in some cases because mesothelioma can spread and infiltrate this anatomical structure that separates the thoracic and abdominal cavities. Surgical excision involves excision of part or all of the diaphragm and its reconstruction with or without prosthetic replacement.
Pericardiectomy
If mesothelioma spreads to the pericardium (the membrane that surrounds the heart), surgical removal of the affected pericardium and its replacement by synthetic or biological prostheses may be necessary.
Pneumonectomy
In very advanced cases of pleural mesothelioma in which the tumor significantly involves one lung, it may be necessary to remove the entire affected lung surgically.
Hyperthermic intraperitoneal cytoreduction (HITOC)
This procedure can be performed in conjunction with pleurectomy. After surgical removal of the tumor, a chemotherapy solution heated to 41°/42° for about 60 minutes is circulated directly into the chest cavity to produce the death of any remaining cancer cells. Surgical treatment of mesothelioma is usually part of a multimodal approach, that is, combined with other forms of therapy, such as chemotherapy and radiation therapy, to improve the overall effectiveness of treatment and to manage the disease more comprehensively. The choice of treatment depends on several factors, including the stage of the tumor, the patient’s overall health, and personal preference. Surgical treatment of mesothelioma depends on the staging of the disease and its extent.
Radiation Therapy
To date, the main indication for radiation therapy is palliative, particularly in patients with localized pain symptoms.
Only in highly selected cases, based on the patient’s overall condition, comorbidities, disease extent, and histological subtype, is radiation therapy used with the aim of improving local disease control and reducing the risk of locoregional recurrence.
Ongoing Support
At the Canciolo Cancer Institute, we provide continuous support before, during, and after treatment, accompanying each patient throughout the entire course of care and recovery.
Pleurectomy and Lung Decortication
This surgery is used to treat pleural mesothelioma, which affects the membrane lining the inner wall of the chest wall and lungs (parietal and visceral pleura).
During pleurectomy, the surgeon removes all of the pleura and surrounding tissue affected by the cancer.
This surgery aims to remove the tumor without removing the underlying lung in order to relieve associated symptoms, such as chest pain and fluid accumulation in the chest (pleural effusion).
Pleurectomy can sometimes be enlarged by removing neighboring organs involved in the disease.
Excision of the diaphragm
Pleurectomy may be expanded to the diaphragmatic muscle in some cases because mesothelioma can spread and infiltrate this anatomical structure that separates the thoracic and abdominal cavities. Surgical excision involves excision of part or all of the diaphragm and its reconstruction with or without prosthetic replacement.
Pericardiectomy
If mesothelioma spreads to the pericardium (the membrane that surrounds the heart), surgical removal of the affected pericardium and its replacement by synthetic or biological prostheses may be necessary.
Pneumonectomy
In very advanced cases of pleural mesothelioma in which the tumor significantly involves one lung, it may be necessary to remove the entire affected lung surgically.
Hyperthermic intraperitoneal cytoreduction (HITOC)
This procedure can be performed in conjunction with pleurectomy. After surgical removal of the tumor, a chemotherapy solution heated to 41°/42° for about 60 minutes is circulated directly into the chest cavity to produce the death of any remaining cancer cells. Surgical treatment of mesothelioma is usually part of a multimodal approach, that is, combined with other forms of therapy, such as chemotherapy and radiation therapy, to improve the overall effectiveness of treatment and to manage the disease more comprehensively. The choice of treatment depends on several factors, including the stage of the tumor, the patient’s overall health, and personal preference. Surgical treatment of mesothelioma depends on the staging of the disease and its extent.
Multi Disciplinary Team
Every cancer requires a multidisciplinary approach at all stages of disease management. At the Candiolo Cancer Institute, this is provided by a team of specialists from various clinical and surgical departments, known as the GIC, Interdisciplinary Care Group (or MDT). The GIC ensures that each patient is supported throughout the diagnostic and therapeutic process, including arranging and coordinating examinations and maintaining communication with the patient and their family.
For each patient, the GIC (MDT) defines and shares a personalized care pathway based not only on the type and stage of the tumor but also on the patient’s individual characteristics. The goal is to achieve the best possible outcomes both oncologically and functionally, while maintaining a high quality of life.
Clinical Divisions
The diagnostic and therapeutic pathway for mesothelioma at the Candiolo Cancer Institute involves a multidisciplinary team and several clinical divisions, including:
- Thoracic Surgery
- Medical Oncology
- Anesthesia and Resuscitation
- Nuclear Medicine
- Radiotherapy
- Radiodiagnostics
- Anatomical Pathology
Why Choose Us
At the Candiolo Cancer Institute, every patient with mesothelioma receives highly specialized care through the coordinated work of a dedicated GIC (Interdisciplinary Care Group).
Clinical Experience and Tailored Approach
Thanks to the large number of cases treated each year, the Candiolo Cancer Institute is a national reference center for the care of this disease. This extensive experience allows us to manage even the most complex cases, always using a personalized approach, tailored to the clinical and individual profile of each patient.
Imaging Technologies and Advanced Diagnostics
Establishing a treatment plan always begins with an accurate and timely diagnosis. Patients have access to state-of-the-art imaging technologies, such as ultrasound, contrast-enhanced CT, MRI, and cholangio-RM, which are critical for accurately assessing the extent of the tumor.
Advanced laboratory tests, including molecular analyses, are also available to help define biological features of the disease and guide treatment choices.
Minimally Invasive Surgical Techniques and Multidisciplinarity
When appropriate, surgeries are performed using minimally invasive, laparoscopic or robotic techniques. These approaches involve the use of camera-equipped instruments introduced into the abdomen through small incisions, thus reducing surgical trauma. Benefits to the patient include shorter hospital stay times, faster recovery, and lower risk of complications compared with traditional open surgery.
Clinical Research and Access to Trials
As an IRCCS (Scientific Institute for Research, Hospitalization, and Healthcare), the Candiolo Cancer Institute combines clinical care with a strong focus on scientific research. Patients can be considered for participation in active clinical trials, offering access to innovative therapies not yet available in standard practice. This integration of care and research is a distinctive strength that translates into tangible benefits for patients.
Care and Support Every Step of the Way
The Interdisciplinary Care Group (GIC or MDT) supports the patient at every stage: from diagnosis, through treatment, to follow-up. Special attention is paid to nutritional support, psychological health and reintegration into daily life. The organization of checkups, examinations, and treatment is designed to ensure continuity, serenity, and a humane, caring approach to each patient’s needs.