This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
A biopsy taken from a granulomatous lesion of nose revealed Mikulicz's cells and eosinophilic structures in the cytoplasm of the plasma cells, the likely diagnosis is: 
Select and explain. 
A. Mucormycosis, B. Rhinosporidiosis, C. Rhinoscleroma, D. Nasal leprosy
C: Rhinoscleroma
Answer: C: Rhinoscleroma 
Explanation: Mikulicz's cells are foamy histiocytes teaming with gram-negative coccobacilli in the cytoplasm.Eosinophilic structures seen in the cytoplasm of plasma cells are called Russell bodies. Both these structures are characteristics of rhinoscleroma. Diagnosis of rhinoscleroma is made on biopsy and culture of tissues for causative bacilli.