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: Dental
[{'content': 'Not a histological feature of lichen planus is – \nSelect and explain. \nA. Acanthosis, B. Hyperkeratosis, C. Neutrophils in stratum, D. Pigment incontinence', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Histopathology in Lichen planus\n\nThe basic pathology in lichen planus is the damage to the basal cell layer of epidermis leading to hydropic degeneration of basal cells.\nEpidermal thickening\xa0especially of granular cell layer → Hypergranulosis.\nHyperkeratosis (Thickening of stratum comuem)\nAcanthosis (Thickening of Stratum) malpighi.\nSubepidermal - lichenoid band due to deposition of lymphocytes & histiocytes in upper dermis.\nDropping of melanin pigment from damaged keratinocytes of epidermis into dermis\xa0→\xa0pigment incontinence.\nThis melanin is engulfed by macrophages which results information of cytoid bodies (civatte or colloid bodies).\nMox Joseph Histological cleft\xa0→ Separation of epidermis in small clefts.', 'role': 'assistant'}]