Preoperative Magnetic Resonance Imaging in Patients With Stage I Invasive Ductal Breast Cancer: A Prospective...

Area of Science:

• Oncology
• Radiology
• Surgical Oncology

Background:

• Preoperative magnetic resonance imaging (MRI) is a valuable tool for local staging in breast cancer patients.
• Its use is selectively recommended for lobular carcinoma and dense breast tissue when mammography and ultrasound are insufficient.
• Routine MRI for invasive ductal carcinoma remains controversial.

Purpose of the Study:

• To evaluate the diagnostic utility of preoperative MRI.
• To assess the impact of preoperative MRI on short-term surgical outcomes.
• To investigate its role in newly diagnosed, unifocal, stage I invasive ductal carcinoma.

Main Methods:

• A randomized study involving 100 patients with unifocal stage I invasive ductal carcinoma.
• Patients were assigned 1:1 to either receive preoperative MRI or proceed directly to surgery.
• Two study arms with 50 patients each were analyzed.

Main Results:

• MRI detected additional findings in 28% of patients, with 7 being malignant (6 ipsilateral, 1 contralateral).
• Surgical management changed in 20% of patients due to MRI findings.
• While not statistically significant, the MRI group had a higher mastectomy rate (12% vs 4%) and a lower reoperation rate (14% vs 24%).
• The interval to surgery was significantly longer in the MRI group (34 days vs 21 days).

Conclusions:

• Preoperative MRI can be beneficial for select patients with early-stage invasive ductal carcinoma.
• Routine use of MRI in all patients with invasive ductal carcinoma is not advised without specific indications.
• Further research may clarify optimal patient selection for preoperative MRI.