[Preoperative staging MRI for rectal cancer and pathologic correlation].

Area of Science:

• Oncology
• Radiology
• Medical Imaging

Context:

• Accurate preoperative staging of rectal cancer is crucial for treatment planning and patient outcomes.
• Magnetic resonance imaging (MRI) has emerged as a key modality for evaluating rectal tumors.

Purpose:

• To evaluate the diagnostic accuracy of MRI in the preoperative staging of rectal cancer.
• To establish the correlation between MRI findings and subsequent histopathological results.

Summary:

• A retrospective analysis of 120 rectal cancer patients assessed MRI accuracy for T stage (72%), N stage (60%), and distance to mesorectal fascia (87.5%).
• Eighty patients received adjuvant therapy based on advanced disease indicators identified by MRI or pathology.
• Pelvic MRI demonstrated good radiopathologic correlation for locoregional staging, though nodal staging accuracy was limited.

Impact:

• MRI is a valuable tool for preoperative rectal cancer staging, aiding in treatment decisions.
• Findings highlight the need for improved MRI techniques or complementary methods for accurate lymph node assessment in rectal cancer.