Table 2 The correlation of SMAD4 expression at tumor central lesion and at tumor invasion front
From: Prognostic value of functional SMAD4 localization in extrahepatic bile duct cancer
SMAD4 expression at central lesion | SMAD4 expression at invasion front | |
|---|---|---|
Absent | Present | |
Absent | 6 (8.2%) | 4 (5.5%) |
Present | 13 (17.8%) | 50 (68.5%) |