Granuloma annulare (GA) is a benign skin condition characterized by the formation of raised, reddish bumps or lesions, often in a ring-like pattern. While it can affect individuals of all ages ...

Etiology: The cause of granuloma annulare is unknown. Granuloma annulare can occur at any age, but is seen predominantly in children and young adults. It occurs more frequently in females than males.

The accumulation of MWNTs in the diaphragmatic mesothelium and the subsequent degree of granuloma lesion formation were significantly higher after injection of rigid MWNTs longer than 20 μm ...