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- FIGURE 47-1. Relative size of various clinical and histologic
- subgroups of patients as determined by optimal clinical and pathologic
- evaluation. About 40% of patients have responsive tumors. PDC, poorly
- differentiated carcinoma; PDA, poorly differentiated adenocarcinoma;
- PDMN, poorly differentiated malignant neoplasm. (Hainsworth JD, Greco
- FA. Treatment of patients with cancer of an unknown primary site. N
- Engl J Med 1995;329:257)
-