[Scalp and leg ulcerations revealing systemic sarcoidosis].

Introduction: Sarcoidosis is a multisystem disorder. Skin injury can have a wide range of semiologies. Ulcerated forms have rarely been described.

[Abdominal wall skin nodules revealing xanthogranulomatous pylonephritis].

Introduction: Xanthogranulomatous pyelonephritis is a chronic pyelonephritis characterized by an inflammatory granulomatous reaction that destroys the renal parenchyma. It is an uncommon entity. Diffuse inflammation has the potential to spread to nearby organs, especially the skin.