Dados do Trabalho

Título

Assessing breast asymmetries using contrast enhanced AB-MRI

Introdução e objetivo(s)

Mammographic asymmetries are divided into the following categories: Asymmetry, focal asymmetry, developing asymmetry, global asymmetry according to the 5th edition of the ACR BIRADS
The most common cause of asymmetry in mammography screening is due to overlapping normal tissue. The asymmetries that are confirmed as true lesions are focal asymmetries or masses that must be examined to rule out cancer.
Our aim is to analyze the possibility of evaluating asymmetries with contrast-enhanced abbreviated magnetic resonance imaging (AB-NMR: T2, Dynamic Scan), as it has a high sensitivity and a negative predictive value (NPV) of 98%.

Método(s)

Patients with focal mammographic asymmetries were examined with mammography views, additional compression techniques and AB-MRI.

Discussão

Morphological techniques are often insufficient and unspecific to categorize focal asymmetries, and a two-year follow-up is also required to demonstrate radiological stability. With a morphologic and functional technique such as AB-MRI, they can be more accurately categorized as MRI has a higher sensitivity in detection and a high NPV that rules out malignancy and shortens patient follow-up time.

Conclusões

The evaluation of focal asymmetries with AB-MRI allows us to better define the categorization of enhanced asymmetries BIRADS 4 with the consequence of mandatory histological examination and to classify the asymmetries that do not enhance due to their high NPV as BIRADS 2. Breast ultrasound should be performed as a "target ultrasound" method for a possible percutaneous biopsy of contrast-enhanced asymmetries. This would improve workflows and the cost-benefit ratio.

Palavras Chave

Asymmetries; Magnetic Resonance Imagin; breast

Arquivos