Giant nodular fasciitis originating from the humeral periosteum: A case report

Figure 1 Imaging and gross examination. A: Magnetic resonance imaging showed patchy low signal in the medial humerus (T1WI); B: Magnetic resonance imaging showed a high signal intensity on the humerus, with local thinning of the humeral cortex (T2WI); C: The root of the mass extended laterally below the biceps brachii and was closely related to the humerus; D: The mass was nodular, with a diameter of 7.5 cm, a relatively clear boundary, and a reddish gray appearance on cross section.