Table 2.
Histological types and metastatic sites by primary tumor site. Categorical variables are presented as frequencies (%)
| Study type, N | Primary tumor site | Histological types per primary tumor site | Metastatic sites per primary tumor site |
|---|---|---|---|
| Case reports, N = 71 | Lung: 15 (21.1%) |
Squamous carcinoma: 5 Adenocarcinoma: 1 Small cell lung cancer: 8 Unknown: 1 |
Liver: 9 Bones: 1 Liver & lungs: 1 Liver & bones: 1 Unknown: 1 No metastasis: 2 |
| Skin: 3 (4.2%) | Melanoma: 3 |
Liver & lungs: 1 Liver, lung & bones: 1 Other: 1 |
|
| Colon: 6 (8.5%) | Adenocarcinoma: 6 |
Liver: 3 Lung: 1 Liver & lung: 1 Liver & bones: 1 |
|
| Liver: 5 (7.0%) |
Hepatocellular carcinoma: 3 Adenocarcinoma: 1 Unknown: 1 |
Lung: 3 No metastasis: 1 Unknown: 1 |
|
| Prostate: 3 (4.2%) | Adenocarcinoma: 3 |
Bones: 1 Liver & bones: 2 |
|
| Uterus (Endometrium/Myometrium): 4 (5.6%) |
Endometrial adenocarcinoma: 2 Leiomyosarcoma: 1 Neuroendocrine carcinoma: 1 |
Liver: 1 Lung: 1 No metastasis: 2 |
|
| Stomach: 4 (5.6%) | Adenocarcinoma: 4 |
Liver: 2 Liver & bones: 1 Other: 1 |
|
| Breast: 3 (4.2%) | Adenocarcinoma: 3 |
Liver & lung: 1 Liver, lung & bones: 1 No metastasis: 1 |
|
| Kidney: 3 (4.2%) |
Adenocarcinoma: 1 Sarcoma: 1 Urothelial carcinoma: 1 |
Liver & bones: 2 No metastasis: 1 |
|
| Ovary: 2 (2.8%) | Adenocarcinoma: 2 |
Other: 1 No metastasis: 1 |
|
| Pancreas: 2 (2.8%) | Adenocarcinoma: 2 |
Liver: 1 Liver & lung: 1 |
|
| Adrenal gland: 2 (2.8%) |
Adenocarcinoma: 1 Pheochromocytoma: 1 |
Liver: 1 No metastasis: 1 |
|
| Uterus – cervix: 1 (1.4%) | Squamous carcinoma: 1 | Lung & bones: 1 | |
| Gallbladder: 1 (1.4%) | Adenocarcinoma: 1 | Liver: 1 | |
| Esophagus: 1 (1.4%) | Squamous carcinoma: 1 | Liver & bones: 1 | |
| Other: 10 (14.1%) | Melanoma of the eyeball: 1 | Liver: 1 | |
| Retroperitoneal: 1 adenocarcinoma, 1 sarcoma, 1 seminoma, 1 choriocarcinoma |
Liver & lung: 3 Unknown: 1 |
||
| Neck: 1 sarcoma | Liver & lung: 1 | ||
| Pelvis: 1 sarcoma, 1 primitive neuroectodermal tumor |
Lung: 1 Liver & bones: 1 |
||
| Unknown paracaval mass | Liver & lung: 1 | ||
| Neuroblastoma in the upper left hemithorax: 1 | Liver, lung & bones: 1 | ||
| Unknown: 6 (8.5%) |
Adenocarcinoma: 4 Neuroendocrine carcinoma: 1 Unknown: 1 |
Liver: 2 Liver & lung: 2 Liver & bones: 1 Other: 1 |
|
| Cohort, N = 9 | Lung: 3 (33.3%) |
Small cell lung cancer: 2 Adenocarcinoma: 1 |
NA |
| Stomach: 1 (11.1%) | Adenocarcinoma: 1 | NA | |
| Colon: 1 (11.1%) | Adenocarcinoma: 1 | NA | |
| Uterus (Endometrium): 1 (11.1%) | Adenocarcinoma: 1 | NA | |
| Esophagus: 1 (11.1%) | Squamous carcinoma: 1 | NA | |
| Other: 1 (11.1%) | Quadriceps myxoid liposarcoma: 1 | NA | |
| Unknown: 1 (11.1%) | NA | NA |