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Concept explainers
Introduction: Tumor is an abnormal tissue mass that may be solid or fluid-filled lumps. Malignant tumors refer to cancerous tumors, where the abnormal cells divide rapidly and metastasize to new areas. The severity of a malignant tumor depends on the tumor location, and how fast it can metastasize. The general combining forms for cancer include carcin/o which means cancer, and sarc/o which means malignant tumor of the connective tissue.
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Answer to Problem 1FYIPA
Correct answer: “Melanoma develops from a dysplastic nevus and it is a tumor of pigmented skin cells”.
Explanation of Solution
Dysplastic nevus is an atypical mole that differs histopathologically from the regular moles. These are pre-cancerous pigmented lesions that are a mixture of tan and brown color, and are often wider than 5mm. They have an increased risk of developing malignant melanoma. Melanoma is a skin cancer that begins in melanocytes in the skin.
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Chapter 19 Solutions
The Language of Medicine
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