38 Benign Soft-Tissue Masses on Magnetic Resonance Imaging

CLINICAL IMAGAGINGAN ATLAS OF DIFFERENTIAL DAIGNOSIS

EISENBERG

DR. Muhammad Bin Zulfiqar PGR-FCPS III SIMS/SHL

Fig B 38-1 Lipoma. Coronal T1-weighted image shows a well-defined mass of fat signal intensity along the flexor tendons of the hand.46

Fig B 38-2 Ganglion cyst. Coronal fat-suppressed T2-weighted image demonstrates a lobulated lesion of the wrist.46

• Fig B 38-3 Hemangioma. Coronal T2-weighted image shows deep and superficial hemangiomas in the distal thigh with markedly increased signal intensity in serpiginous vascular structures.46

• Fig B 38-4 Lymphangioma. Coronal T1-weighted images of the lower extremities demonstrate dilated lymphatic vessels of low signal intensity on the right.46

• Fig B 38-5 Neurofibroma. Axial T2-weighted image shows a high-intensity lesion with central low intensity, the so-called “target appearance” that is characteristic of this tumor.46

• Fig B 38-6 Myxoma. T2-weighted axial image shows homogeneous high signal intensity in this gluteal lesion.46

• Fig B 38-7 Desmoid. Axial T1-weighted image shows a poorly defined foot mass that contains areas of low signal intensity characteristic of a fibrous lesion.46

• Fig B 38-8 Giant cell tumor of tendon sheath. Sagittal T2-weighted contrast image shows irregular enhancement of this soft-tissue mass, which has produced a broad erosion of the underlying middle phalanx of the finger.46

• Fig B 38-9 Hematoma. T2-weighted image shows a high signal intensity mass.46

• Fig B 38-10 Myositis ossificans. On this axial T1-weighted image, the center of the lesion demonstrates high signal intensity, while the periphery exhibits low-to-intermediate signal.45

• Fig B 38-11 Abscess. Sagittal T2-weighted image shows a large, inhomogeneous posterior soft-tissue abscess with bone erosion due to Mycobacterium tuberculosis.46