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Table 3 10 most frequent diagnosis for infectious diseases, neoplasm and NIID in 18 case-series 2006–2014

From: Fever of unknown origin (FUO): which are the factors influencing the final diagnosis? A 2005–2015 systematic review

Diagnosis

N° (%)

N° of case-series including the diagnosis

Infectious Diseases (out of 1197 cases from 18 case-series where details are available)

 Mycobacterial diseases

440 (36.8%)

17

 Endocarditis

119 (9.9%)

15

 Brucellosis

58 (4.8%)

9

 Internal abscesses

49 (4.1%)

11

 Salmonellosis

43 (3.6%)

9

 CMV infections

43 (3.6%)

7

 Urinary tract infections

40 (3.3%)

11

 Sepsis

20 (1.7%)

4

 HIV/AIDS

20 (1.7%)

4

 Osteoarticular infections

18 (1.5%)

5

Neoplasms (out of 289 cases from 15 case-series where details are available)

 Lynphomas (including Hodgkin, Non-Hodgkin, not specified)

169 (58.5%)

9

 Solid tumors (not specified)

25 (8.7%)

4

 Leukemias

17 (5.9%)

7

 Other cancers (not specified)

14 (4.8%)

5

 Myelodysplastic syndrome

11 (3.8%)

7

 Colon cancers

10 (3.5%)

5

 Multiple mieloma

8 (2.8%)

6

 Gastric cancers

5 (1.7%)

3

 Mesotheliomas

5 (1.7%)

3

 Castleman’s diseases

4 (1.4%)

3

NIIDs (out of 642 cases from 17 case-series where details are available)

 Adult-onset Still’s disease

177 (27. 6%)

15

 Systemic Lupus Erythematosus

71 (11.1%)

14

 Vasculitis

63 (9.8%)

8

 Rheumatic Polymyalgia

44 (6.9%)

8

 Giant Cells Arteritis

32 (5.0%)

6

 Mixed connective diseases (not specified)

31 (4.8%)

5

 Sarcoidosis

21 (3.3%

7

 Rheumatoid Arthritis

17 (2.6%)

6

 Wegener Granulomatosis

14 (2.2%)

4

 Polyarteritis nodosa

13 (2.0%)

5