What is the difference between a malignant lymphoid aggregate and a benign one?
a. Benign aggregates are well defined, whereas malignant aggregates are ill-defined.
b. Malignant aggregates are composed of single polymorphic cells, whereas benign aggregates are composed of multiple monomorphic cells.
c. Benign aggregates are clonal, whereas malignant aggregates are polyclonal.
d. Malignant aggregates have a normal phenotype, whereas benign have an aberrant phenotype.
Correct Answer: A
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Examination of an asymptomatic 27-year-old man reveals numerous circular white lesions surrounding red atrophic patches on the dorsum of the tongue. The lesions cannot be rubbed off with a gauze square. The patient most likely has:
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