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: Surgery
[{'content': 'What of the following is truea) Viral warts spontaneously resolveb) Plantar warts should not be excisedc) Callosity are formed occupationallyd) Corns are viral in etiology \nSelect and explain. \nA. ac, B. bc, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Warts\n\nWarts are epidermal growths associated with human papilloma virus (HPV) infection.\nHistologically they are characterized by\n\n- hyperkeratosis (hypertrophy of the horny layer)\n- acanthosis (hypertrophy of the spinous layer)\n- papillomatosis\n- \xa0Koilocytes (large keratinocytes with eccenteric nuclei) are seen\nDifferent morphologic types of warts occur on different parts of body.\n\nVerruca vulgaris (or common wart) - fingers and toes\nVerruca plantaris (plantar warts) - soles & palms\nVerruca plana (flat warts) - face, legs & hands\nCondylomata acuminata (veneral warts) - moist areas around the vulva, arms & scrotum\n\nTreatment-\n\xa0-\xa0warts can be removed by a number of chemicals, including formalin, podophyllum etc.\n- surgical excision or curettage with electrodessication can also be used.\n-\xa0treatment of extensive areas of skin requires surgical excision under general anaesthesia.\n\nRecurrences are common\nSome warts are risk factors for squamous cell carcinoma\n\nCorns & Callosities\nCorns and callosities both are hyperkeratosis due to chronic excessive pressure or friction on the skin (for eg. callosities on the hands of gardeners and labourers)', 'role': 'assistant'}]