Table 1. Affected organs in CUP (%).

Affected organ	%
Lymph nodes	40–45
Liver	30–40
Skeleton	25–35
Lung	30–40
Pleura	5–15
Peritoneum	5–10
Central nervous system	5–10
Adrenal glands	˜ 6
Skin	˜ 4

CUP, „cancer of unknown primary“ (modified according to [2] and [3])