Imaging in staging of malignant pleural mesothelioma

Our plain-English summary of Imaging in staging of malignant pleural mesothelioma, by M.T. Truong, R.F. Munden (Cancer Imaging, 2004).

The study

• Authors: M.T. Truong, R.F. Munden
• Journal: Cancer Imaging
• Published: 2004;4(2):95-6
• Type of article: Editorial
• Cited by: 1 article, as counted by NIH iCite
• Read it: PubMed · Publisher · Free full text

In plain English

This was a two-page editorial, not a study. Its two authors work in the Department of Diagnostic Radiology at the University of Texas M.D. Anderson Cancer Center, and it reported no new patient data. It discussed imaging used to stage malignant pleural mesothelioma. As background, the authors said rising case numbers were expected because of past occupational asbestos exposure. The authors wrote that CT is the primary imaging method for staging this cancer, and that MRI is better than CT at showing spread through the diaphragm and into the chest wall. They described two small earlier studies by other researchers of FDG-PET scanning. In the first, done in 18 patients, PET found hidden spread of the cancer in two patients being considered for surgery. The second reported a sensitivity of 91% and specificity of 100% in telling mesothelioma apart from benign pleural disease. The authors noted that PET can give false positive results with infection and inflammation, and that its role had not been fully worked out. Based on their own experience, without giving figures, they concluded that combined PET/CT is a potentially valuable new tool for assessing patients before surgery.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: editorial (opinion and commentary, with no original data)
• Who was studied: No patients were studied. The editorial was written by authors from a radiology department at a cancer center in Houston, Texas, USA, and concerns patients with malignant pleural mesothelioma.
• Exposure: No exposure was studied. The article is about imaging methods (CT, MRI, FDG-PET, integrated PET/CT). Occupational asbestos exposure is mentioned only as background, as the reason case numbers were expected to rise.
• Main results:
  • Statement of the editorial authors: CT is the primary imaging method for staging malignant pleural mesothelioma.
  • Statement of the editorial authors: MRI is better than CT at showing spread through the diaphragm and invasion of the chest wall.
  • A cited earlier study by other researchers, not this article's own finding, compared FDG-PET with CT in 18 patients with malignant pleural mesothelioma. PET detected hidden metastases in two patients being considered for surgical resection.
  • A second cited earlier study by other researchers, not this article's own finding, was done in patients suspected of having mesothelioma. It reported FDG uptake significantly higher in mesothelioma than in benign pleural diseases, with sensitivity 91% and specificity 100%.
  • The authors stated that, in their own experience, integrated PET/CT improved diagnostic accuracy in staging mesothelioma patients. No numbers or patient counts were given for this experience.
• The authors' conclusion: The authors concluded that, in their experience, integrated PET/CT is a potentially valuable new tool in the preoperative assessment of patients with malignant pleural mesothelioma, by improving evaluation of locoregional disease and detection of metastatic disease.
• Limitations the authors state:
  • The authors noted that the role of FDG-PET had not been fully established.
  • The authors noted that FDG-PET can give false positive results in infection and inflammation.

Topics

Medical terms in this study, explained in our Lexicon: Staging, Pleural Mesothelioma.

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• North American Multicenter Volumetric CT Study for Clinical Staging of Malignant Pleural Mesothelioma: Feasibility and Logistics of Setting Up a Quantitative Imaging Study — R.R. Gill, D.P. Naidich, et al. (2016)
• Whole-Body MRI: Comparison of Its Capability for TNM Staging of Malignant Pleural Mesothelioma With That of Coregistered PET/MRI, Integrated FDG PET/CT, and Conventional Imaging — Y. Ohno, M. Yui, et al. (2019)
• New Updates of the Imaging Role in Diagnosis, Staging, and Response Treatment of Malignant Pleural Mesothelioma — C. Romei, S.C. Fanni, et al. (2021)
• The Prognostic Value of 18F-FDG PET Imaging at Staging in Patients with Malignant Pleural Mesothelioma: A Literature Review — S. Taralli, R.G. Giancipoli, et al. (2021)
• Diagnostic Laparoscopy Improves Staging of Malignant Pleural Mesothelioma With Routine Positron Emission Tomography Imaging — R.T. Ripley, N. Palivela, et al. (2021)

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