Fig. 7
From: Understanding a mass in the paraspinal region: an anatomical approach
Leiomyosarcoma of left paraspinal muscles in a 65-year-old male with back pain and genitourinary issues. Contrast-enhanced axial CT scan reconstruction (a) demonstrates aggressive features with moth-eaten lysis of the vertebra and iliac bone (white arrows). The mass extends transversally in both epaxial and in hypaxial muscles (b–e, white arrowheads), and longitudinally along L2 to S1 (c). The mass has heterogeneous high signal intensity on axial (b) and sagittal (c) T2WI, low intensity signal on axial T1WI, and heterogeneous enhancement on contrast-enhanced fat saturation T1WI (white arrowheads) (e). Digital subtraction angiogram (f) of the left 3nd lumbar artery (arrow) shows hypervascularisation of the tumour (white arrowheads). The yellow star shows the epicentre of the mass