System: Musculoskeletal / Chest Wall Exam Focus: High-Yield Imaging Review Key Imaging Pattern: Deep infrascapular mass with interwoven fat streaks and muscle-like soft tissue on CT 1-Clinical Vignette A 54-year-old man presents with swelling beneath the right scapula and a catching or snapping sensation during arm movements. 2. Board-Style Question Which diagnosis best explains the location and internal architecture of this lesion? A. Lipoma B. Desmoid-type fibromatosis C. E

Case Lumbar MRI in a 46-year-old man demonstrates a prominent extruded disc herniation at L4–L5. T1W Sagittal T2W Sagttal The disc material extends approximately 13 mm caudally from the disc space and occupies a substantial portion of the right paracentral epidural space. At this location, the anteroposterior diameter of the residual dural sac measures approximately 6 mm

Clinical Profile Patient: 25-year-old female. Presentation: Slow-growing, painless, firm swelling in the left mastoid region. Radiological Findings: 1. CT: The Architecture A well-defined, lytic lesion significantly expanding the outer table of the left mastoid bone. The sclerotic margins indicate a slow-growing, benign process. 2. MRI: Tissue Identity T1W Axial T2W Axial T1: Hypointense. T2: Heterog eneously hyperintense. Contrast T1: No internal enhancement, but minimal p