|
| Author, country, year | Study design | Number of patients with primary SS included | Type of malignancy associated |
|
| Insler and Shelin; USA; 1987 [17] | Case report | 1 | Thymoma |
| Janssens et al.; Belgium; 1987 [11] | Case report | 1 | Primary SS as paraneoplastic syndrome |
| Matsumoto et al; Japan; 1996 [16] | Case report | 1 | Thymoma |
| Theander et al.; Sweden; 2006 [20] | Retrospective cohort | 507 | Lymphoproliferative malignancy |
| Lazarus et al.; England; 2006 [2] | Retrospective cohort | 112 | Lymphoproliferative and multiple myeloma |
| Gadalla et al.; USA; 2009 [21] | Retrospective case -control | 196 | Breast cancer |
| Zhang et al.; China; 2010 [1] | Retrospective cohort | 1320 | Lymphoproliferative malignancy, multiple myeloma; thymoma; oral cavity and breast |
| Bartoloni et al.; Italy; 2012 [10] | Case report | 1 | Primary SS as paraneoplastic syndrome |
| Weng et al; Taiwan, 2012 [3] | Retrospective cohort | 7852 | Thyroid |
| Boussios et al.; Greece; 2014 [13] | Retrospective cohort | 450 | Lymphoproliferative malignancy |
| Lai et al.; Taiwan 2014 [5] | Case report | 1 | Nasopharyngeal |
| Yu et al.; Taiwan; 2016 [15] | Retrospective cohort | 11998 | Nasopharyngeal, thyroid, and lung |
| Brito Zéron et al.; Spain; 2017 [4] | Retrospective cohort | 1300 | Oral cavity, thyroid, and stomach |
| Brom et al.; Argentine; 2019 [14] | Retrospective cohort | 157 | Oral cavity and breast |
| Tarhan et al.; Turkey; 2019 [22] | Retrospective cohort | 8 | Breast |
| Findakly; USA; 2020 [8] | Case report | 1 | Gastric adenocarcinoma |
| Kang et al.; South Korea; 2020 [6] | Retrospective cohort | 6359 | Oropharynx, thyroid, liver, and lung (more common); pancreatic cancer |
| Mathews et al.; USA; 2020 [7] | Retrospective cohort | 126 | Lymphoproliferative malignancy, breast, and thyroid (more common); pancreatic cancer |
|
