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Zorluk: OrtaOrdering Imaging Studies

A 48-year-old woman presents to her primary care physician after discovering a new, painless lump in the upper outer quadrant of her right breast. On examination, a 2-cm, firm, immobile mass is palpated. There are no overlying skin changes or nipple discharge, and axillary lymph nodes are not palpable. She has no personal or family history of breast cancer. Her last screening mammogram was 3 years ago.

Arrange the following radiological and image-guided steps in the most appropriate chronological sequence for the evaluation and initial preoperative workup of this patient, assuming findings remain highly suspicious for malignancy at each step.

  1. 1Diagnostic bilateral mammography
  2. 2Targeted right breast ultrasonography
  3. 3Image-guided core needle biopsy
  4. 4Contrast-enhanced breast magnetic resonance imaging (MRI)

Cevap

The correct chronological sequence begins with diagnostic bilateral mammography, followed by targeted right breast ultrasonography, then an image-guided core needle biopsy, and finally contrast-enhanced breast magnetic resonance imaging (MRI).
For a woman over the age of 30 presenting with a palpable breast mass, diagnostic mammography is the standard, evidence-based initial imaging study. It provides a comprehensive view of both the affected breast and the contralateral breast. Targeted ultrasound immediately follows to further characterize the mass as either cystic or solid and to evaluate regional nodes. Once identified as a suspicious solid lesion on these modalities, an image-guided core needle biopsy must be performed to establish a definitive tissue diagnosis. Finally, after a diagnosis of breast cancer is confirmed, a breast MRI can be ordered for precise preoperative staging, particularly to rule out multifocal disease if breast-conserving surgery is being considered.

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1
Select diagnostic bilateral mammography as the first step.
Initial imaging assessment of the mass and contralateral breast.
In women aged 30 and older with a newly palpable breast mass, diagnostic mammography is the recommended first step to evaluate the mass, look for architectural distortion, and screen the entire breast tissue on both sides.
2
Select targeted right breast ultrasonography as the second step.
Characterization of the mass properties.
Ultrasound is used adjunctively after mammography to determine if the mass is fluid-filled (cystic) or solid, and to evaluate the ipsilateral axillary lymph nodes.
3
Select image-guided core needle biopsy as the third step.
Histological confirmation of the diagnosis.
A highly suspicious solid mass seen on imaging requires tissue sampling for a definitive pathological diagnosis before any definitive surgical or oncological treatment is planned.
4
Select contrast-enhanced breast magnetic resonance imaging (MRI) as the final step.
Comprehensive preoperative staging.
While not routinely required for all patients, breast MRI is often utilized after cancer confirmation to evaluate the precise extent of the disease, detect multifocal disease, and assist in planning breast-conserving surgery.

Anahtar Kavram

The standard sequencing of diagnostic imaging for a palpable breast mass in a woman over 30 years old progresses from initial mammography to targeted ultrasonography, followed by image-guided tissue biopsy, and selectively preoperative breast MRI.
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