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': 'A child presents with linear verrucous plaques on the trunk with vacuolization of keratinocytes in S.Spinosum and S.Granulosum. Diagnosis is? \nSelect and explain. \nA. Incontinenta pigmenti, B. Delayed hypersensitivity reaction, C. Verrucuous epidermal nevus, D. Linear darriers disease', 'role': 'user'}, {'content': "Answer: C \nExplanation: Verrucous epidermal nevus\n\nVerrucous epidermal nevus consists of hyperplasia of the surface epidermis and typically appears as verrucous papules that coalesce to form well demarcated, skin-coloured to the brown, papillomatous plaque.\nMost lesions are present at birth and develop during infancy. They enlarge slowly during childhood and generally reach a stable size at adolescence.\nLesions may be localized or diffuse.\nLinear configurations are common especially on the limbs and may follow skin tension lines or Blaschko's lines.\nThe salient histological features are -\nPerinuclear vacuolization of the cells in the stratum spinosum and stratum granulosum.\n\nIrregular cellular boundaries peripheral to the vacuolization and increased number of irregularly shaped large keratohyaline granules.\nCompact hyperkeratosis in stratum corneum", 'role': 'assistant'}]