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Proportional distribution according to occult primary site
| Analysis of 12 postmortem cohort studies (1944–2000), primary tumor site was identified in 644 (73%) out of 884 patients [5] | |
|---|---|
| Lung 27% | Colorectal 7% |
| Pancreas 24% | Genital tract 7% |
| Liver or bile duct 8% | Stomach 6% |
| Kidney or adrenal 8% | Unknown 27% |
