Dermoscopic patterns of granuloma annulare and necrobiosis lipoidica

Granuloma annulare (GA) and necrobiosis lipoidica (NL) are the most common granulomatous skin diseases (GSD). Although GA usually follows a self-limiting course, it has been reported to occur in association with haematologic neoplasias and solid tumours. 1,2 The aetio- pathogenesis of NL is strongly associated with diabetes mellitus, and nonhealing ulcers and squamous cell carcinoma have been reported to develop occasionally on chronic NL lesions.