Este documento discute o protocolo de ressonância magnética para mamas. Ele descreve os papéis da RM na avaliação de mamas, incluindo tumores malignos e complicações de implantes mamários. Também discute as sequências de imagem e artefatos comuns na RM de mama.
had been diagnosed with selected connective tissue and autoimmune disease (scleroderma, systemic lupus erythematosis, Sjögren's syndrome), Raynaud's disease, fibromyalgia, chronic fatigue syndrome, or other connective tissue diseases
45-year-old woman with extracapsular rupture of 15-year-old subpectoral single-lumen silicone gel implant. Axial fast spin-echo T2-weighted MR image with water suppression shows several small foci of silicone gel ( curved arrows ) anterior to implant. Note collapsed shell ( open arrows ) indicating rupture.
46-year-old woman with ruptured 18-year-old subpectoral single-lumen silicone gel implant and isolated mass of extracapsular silicone gel. Sagittal fast spin-echo T2-weighted MR image shows posterolateral silicone gel ( arrow ) in breast, isointense to silicone in implant. 46-year-old woman with ruptured 18-year-old subpectoral single-lumen silicone gel implant and isolated mass of extracapsular silicone gel. Axial inversion-recovery T2-weighted MR image with water suppression shows silicone gel ( arrow ) posterolateral to implant. 46-year-old woman with ruptured 18-year-old subpectoral single-lumen silicone gel implant and isolated mass of extracapsular silicone gel. Axial fast spin-echo T2-weighted MR image with silicone suppression shows discrete mass of silicone gel ( arrow ) in breast adjacent to implant.
Transverse fat-suppressed subtraction MR image (450/12) obtained in the same patient shows two carcinomas in the left breast. The larger lesion (arrow) is slightly lobulated, has an indistinct margin, and shows the characteristic peripheral enhancement with a central nonenhancing nidus. This lesion was selected for MR spectroscopic analysis. (c) Sagittal contrast-enhanced MR image (450/12) obtained in the same patient shows a 1-cm lymph node (arrow).
Transverse fat-suppressed subtraction MR image (450/12) obtained in the same patient shows a large (5-cm) area of clumped segmental enhancement (arrow) in the left breast; this finding is consistent with DCIS. DCIS = ductal carcinoma in situ
