Objectives: Thoracic wall infiltration in pleural mesothelioma determines the extent of resection and can be an important prognostic factor. Currently, standardized imaging for restaging after neoadjuvant systemic therapy comprises contrast-enhanced computed tomography or positron emission tomography. Additional thoracic magnetic resonance imaging could better discriminate chest wall infiltration preoperatively and increase staging accuracy. For this reason, the added benefit of magnetic resonance imaging was evaluated at our center.
Methods: A retrospective analysis of the extended imaging protocol was performed from July 2018 to March 2024, including a descriptive analysis for the patient's sex, age, tobacco consumption, asbestos exposure, histological subtype, TNM stage, Modified Response Evaluation Criteria for Solid Tumors in solid tumors, and number of neoadjuvant therapy cycles. Preoperative restaging included routine imaging and magnetic resonance imaging. After histological diagnosis of pleural mesothelioma, neoadjuvant therapy was conducted, followed by intended macroscopic complete resection, with intraoperative biopsies of suspicious chest wall lesions. Computed tomography and magnetic resonance imaging results were compared with intraoperative biopsies.
Results: Twenty-six patients (mean age, 65.50 years, 11.50% female) with operable pleural mesothelioma were included. Of the 11 patients with histologically proven chest wall infiltration, 10 (90.91%) had a cT-stage 3 or greater and 4 (36.36%) underwent surgery that resulted in an R2 resection. Thoracic magnetic resonance imaging showed a high sensitivity (90.91%) for the detection of chest wall infiltration, especially when compared with the computed tomography scan (9.09%).
Conclusions: With the adjunctive use of magnetic resonance imaging, we demonstrated a higher sensitivity for detection of chest wall infiltration compared with conventional imaging before surgery. This may improve patient selection for surgery. Nevertheless, larger studies are required to confirm these results.
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| http://dx.doi.org/10.1016/j.xjon.2024.10.012 | DOI Listing |
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