Nasal sarcoidosis

Rhinoscleroma, also known as scleroma, sclerotic nose, or respiratory scleroma, is a low-contagious, chronic inflammatory granulomatous disease caused by Klebsiella rhinoscleromatis. This disease often initially affects the nose and slowly progresses to the upper lip, nasopharynx, oropharynx, hypopharynx, trachea, and bronchi, forming hard granulomatous inflammatory masses that lead to deformity or obstruction. Therefore, it is also known as respiratory scleroma.