
Solitary fibrous tumor
Mesothelioma - benign; Mesothelioma - fibrous; Pleural fibromaSolitary fibrous tumor (SFT) is a noncancerous tumor of the lining of the lung and chest cavity, an area called the pleura. SFT used to be called localized fibrous mesothelioma.
Tumor
A tumor is an abnormal growth of body tissue. Tumors can be cancerous (malignant) or noncancerous (benign).
Read Article Now Book Mark ArticleCauses
The exact cause of SFT remains unknown. This type of tumor affects men and women equally.
Symptoms
About one half of the people with this type of tumor do not show any symptoms.
If the tumor grows to a large size and pushes on the lung, it can lead to symptoms, such as:
- Chest pain
Chest pain
Chest pain is discomfort or pain that you feel anywhere along the front of your body between your neck and upper abdomen.
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- Shortness of breath
- Clubbed appearance of the fingers
Clubbed appearance of the fingers
Clubbing is changes in the areas under and around the toenails and fingernails that occur with some disorders. The nails also show changes.
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Exams and Tests
SFT is usually found by accident when a chest x-ray is done for other reasons. If the health care provider suspects SFT, tests will be ordered. These may include:
Chest x-ray
A chest x-ray is an x-ray of the chest, lungs, heart, large arteries, ribs, and diaphragm.

- CT scan of the chest
CT scan of the chest
A chest CT (computed tomography) scan is an imaging method that uses x-rays to create cross-sectional pictures of the chest and upper abdomen....
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Open lung biopsy
An open lung biopsy is surgery to remove a small piece of tissue from the lung. The sample is then examined for cancer, infection, or lung disease....
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The diagnosis of SFT is difficult compared with the cancerous type of this disease, called malignant mesothelioma, which is caused by exposure to asbestos. SFT is not caused by asbestos exposure.
Malignant mesothelioma
Malignant mesothelioma is an uncommon cancerous tumor. It mainly affects the lining of the lung and chest cavity (pleura) or lining of the abdomen (...

Treatment
Treatment is usually to remove the tumor.
Outlook (Prognosis)
The outcome is expected to be good with prompt treatment. In rare cases, the tumor may return.
Possible Complications
Fluid escaping into the membranes around the lungs (pleural effusion) is a complication.
Pleural effusion
A pleural effusion is a buildup of fluid between the layers of tissue that line the lungs and chest cavity.

When to Contact a Medical Professional
Call for an appointment with your provider if you notice symptoms of SFT.
References
Haithcock BE, Zagar TM, Zhang L, Stinchcombe TE. Diseases of the pleura and mediastinum. In: Niederhuber JE, Armitage JO, Doroshow JH, Kastan MB, Tepper JE, eds. Abeloff's Clinical Oncology. 5th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 73.
Myers JL, Arenberg DA. Benign lung tumors. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 56.
Respiratory system - illustration
Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.
Respiratory system
illustration
Review Date: 7/28/2018
Reviewed By: Denis Hadjiliadis, MD, MHS, Paul F. Harron, Jr. Associate Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.