Usefulness of ultrasonography in the diagnosis of subcutaneous granuloma annulare.

Subcutaneous granuloma annulare is a benign inflammatory disorder that primarily affects healthy children and manifests as a rapidly growing, painless, nonmobile mass, most commonly located in the leg. The current case highlights the sonographic appearance of subcutaneous granuloma annulare. Ultrasound color Doppler is a helpful noninvasive imaging test that may allow physicians to confirm the diagnosis of subcutaneous granuloma annulare and avoid unnecessary medical procedures.