This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Histopathological findings, Subject name: Dental
Dyskeratosis is feature of all except: 
Select and explain. 
A. Squamous cell carcinoma, B. Bowen's disease and, C. Darier's disease, D. Lichen planus
D: Lichen planus
Answer: D: Lichen planus 
Explanation: Dyskeratosis - Abnormality in the process of epidermal cell keratinization. Dyskeratosis occurs in two main contexts Malignant and premalignant epithelial lesions: Squamous cell carcinoma Bowen's disease Paget's disease and Solar keratosis. Benign Acantholytic disorder Darier's disease. In Darier's disease, specific types of dyskeratotic cell include corps ronds ( in lower epidermis) and corp grains (upper epidermis)