Right arm pain Within the anterolateral subcutaneous tissues overlying the mid diaphysis of the humerus is a solid nodule measuring 1 x 0.6 x 1.3 cm in the greatest transaxial and craniocaudal dimensions. The mass is isointense to skeletal muscle on T1 sequences and hyperintense to skeletal muscle on fat suppressed T2 sequences. Following contrast administration, there is a homogeneously solid enhancement. No additional lesions are identified. The marrow signal of the humerus is normal as is the caliber and signal intensity of the surrounding musculature.
Solid nodule within the anterolateral subcutaneous tissue overlying the mid diaphysis of the humerus. Although the imaging characteristics are nonspecific, given the patient's history, this may represent a peripheral nerve sheath tumor. Referral to orthopedic oncology is recommended.