Treatment of Patients with Favorable Subsets of Unknown Primary Carcinoma

One of the major advances in the management and treatment of patients with unknown primary carcinoma has been the recognition of several favorable subsets within this heterogeneous group. Although patients who fit into one of these subsets comprise only a minority of the entire group, they can be identified on the basis of specific clinical or pathological features. Early recognition of these patients is important, because specific treatments can improve outcome and extend survival.