Myositis Right humerus:There is mild fatty atrophy of the deltoid muscle. Otherwise the muscle of the chest wall and shoulder are normal in signal and caliber. The underlying marrow signal is normal. Following contrast administration, there is no focal collection or obvious muscle enhancement.Left humerus:Note that intravenous contrast was not present for evaluation of the left humerus. There is mild fatty atrophy of the deltoid muscle. Otherwise the muscle of the chest wall and shoulder are normal in signal and caliber. The underlying marrow signal is normal. There is no lymphadenopathy. The exam is not tailored for the evaluation of the shoulder however no gross abnormalities are identified. There is an incompletely evaluated hypointensity within the superior pole left kidney. Further evaluation with dedicated imaging or correlation with prior imaging recommended.
Mild fatty atrophy of the deltoid muscle bilaterally. Otherwise remaining evaluation of the bilateral humerus is otherwise unremarkable.