Figure 2
From: Primary extrahepatic alveolar echinococcosis of the lumbar spine and the psoas muscle
Magnetic Resonance Imaging of the lumbar spine. (A) The T2-weighted axial MR image shows multiple small hyperintense lesions in the right psoas muscle (arrows). The corresponding fat-suppressed T1-weighted image after gadolinium administration (B) confirmed the diagnosis of a multicystic mass and delineated the thickened, contrast-enhancing septations around the cystic components (arrow). T1-weighted image (C) and T2-weighted STIR image (D) of the lumbar spine in sagittal orientation. These images showed the bone marrow replacement within the first, second, and third lumbar vertebrae (arrows). The lesions comprise of cystic and solid components.