B
Malignant tumours of the skin or mucous membrane
C
Malignant tumours of the colon
D
Benign tumours of the connective tissue
The answer is B.
Solution
Cancers are classified by the tissue in which they arise. Carcinomas are malignant tumours of epithelial tissues, such as the skin and the mucous membranes lining internal organs (e.g. breast, lung, stomach). They are the most common type. Sarcomas are malignant tumours of connective tissues (bone, cartilage, muscle). Leukaemias and lymphomas arise from blood-forming tissues. A tumour of the colon is usually a carcinoma, but carcinoma is not limited to the colon. So carcinoma refers to malignant tumours of the skin or mucous membrane.
ConceptCarcinoma, sarcoma, leukaemia
Human Health and Disease in past papers
121 questions from this chapter have appeared across 27 exam years.
