This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Lisengang rings are present in 
Select and explain. 
A. CEOT, B. OKC, C. CGCG, D. All of the above
A: CEOT
Answer: A: CEOT 
Explanation: Calcifying Epithelial Odontogenic Tumor (Pindborg tumor) is a rare, benign odontogenic lesion. This is rare benign tumor which was first described in 1955 by Dutch pathologist Or J J Pindborg.