CASE 180 79-year-old man complains of a “clicking” sensation in his left shoulder with activity and has a palpable infrascapular mass Contrast-enhanced chest CT (mediastinal window) (Figs. 180.1A, 180.1B, 180.1C, 180.1D) demonstrates a 6.0 cm left-sided, lenticular, infrascapular mass located medial to the serratus anterior and latissimus dorsi muscles. The attenuation of the mass is similar to adjacent skeletal muscle. More inferiorly, streaks of fat are seen intermingled with the mass. Elastofibroma Dorsi Fig. 180.1 Infrascapular Lesion: Decreased to Intermediate Attenuation Similar to Skeletal Muscle • Extrabdominal Desmoid • Neurofibroma • Cicatricial Fibroma • Malignant Fibrous Histiocytoma • Sarcoma
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