Table 1.
Studies excluded from this review.
Table 2.
General characteristics of the included studies.
Fig 1.
Flow chart shows the process of article selection for this study.
Table 3.
Demographic and clinical characteristics (Total patients = 107).
Fig 2.
Comparison of overall survival rate in local disease and metastatic disease.
Fig 3.
Compared with non-axial region, tumor in axial region has a much lower overall survival rate (p = 0.027).
Fig 4.
Prognostic significance of age of the patients is shown.
It is comparison of patients elder than 30 and those younger than 30.
Fig 5.
This figure shows the comparison of overall survival for patients treated with surgery and those without.
A statistically significant difference was noted between the groups by the COX regression test (p = 0.000).
Fig 6.
This figure shows the comparison of overall survival for patients treated with chemotherapy and those without.
There was a trend for patients to get a better overall survival with chemotherapy, however with no statistically significany.
Fig 7.
Local-recurrence-free survival of these 82 patients was estimated using the Kaplan-Meier plots.
(A) A statistically significant difference was noted between the positive margins and negative margins by COX regression (p = 0.000). (B) For positive margins, postoperative radiation therapy could remarkably bring down local recurrence rate(p = 0.013).
Table 4.
Studies (N>10) of MCS published 20 years ago.