Table 3: Mean and median OS of gastrointestinal mucosal melanoma patients with different characteristics.

Characteristic

Mean OS (months)

Median OS (months)

Total

 

38.395

30.000

Sex

Male

38.153

36.000

 

Female

38.177

26.000

Age (years)

≤60

43.414

36.000

 

>60

33.016

23.000

Primary or metastatic

Primary

35.311

30.000

 

Metastatic

50.600

55.000

Tumor location

Upper gastrointestinal tract

29.208

14.000

 

Lower gastrointestinal tract

38.850

30.000

Number of lesions

Single

40.111

36.000

 

Multiple

22.400

20.000

 

Unspecified

43.451

30.000

Initial symptoms

Bleeding (haematochezia or haematemesis)

23.930

22.000

 

Non-bleeding

50.888

55.000

Distant metastasis

Yes

33.193

26.000

 

No

39.097

25.000

 

Unspecified

43.451

30.000

Lymph node metastasis

Yes

32.972

31.000

 

No

49.292

26.000

 

Unspecified

43.451

30.000

Melan A (immunohistochemical analysis)

(+)

29.796

30.000

 

(-)

46.222

36.000

 

Unspecified

39.500

20.000

Treatments

No (had not received any treatment or had received only palliative care)

31.481

31.000

 

Only surgery

35.604

20.000

 

Only chemotherapy

17.000

17.000

 

Both surgery and chemotherapy

50.393

36.000

OS: Overall Survival.