diff --git a/Packages-react/extensions/ohif-cornerstone-extension/.gitignore b/Packages-react/extensions/ohif-cornerstone-extension/.gitignore
index 2ac570343..ebe1583ea 100644
--- a/Packages-react/extensions/ohif-cornerstone-extension/.gitignore
+++ b/Packages-react/extensions/ohif-cornerstone-extension/.gitignore
@@ -21,3 +21,5 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 .idea
+
+yalc.lock
\ No newline at end of file
diff --git a/Packages-react/extensions/ohif-cornerstone-extension/package.json b/Packages-react/extensions/ohif-cornerstone-extension/package.json
index bfaa42d37..84e4ce1af 100644
--- a/Packages-react/extensions/ohif-cornerstone-extension/package.json
+++ b/Packages-react/extensions/ohif-cornerstone-extension/package.json
@@ -26,7 +26,7 @@
     "react-dom": "^15.0.0 || ^16.0.0",
     "react-redux": "^6.0.0",
     "redux": "^4.0.1",
-    "ohif-core": "^0.2.6"
+    "ohif-core": "^0.2.7"
   },
   "devDependencies": {
     "@babel/core": "^7.2.2",
diff --git a/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneExtension.js b/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneExtension.js
index d8cc74834..1ba733998 100644
--- a/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneExtension.js
+++ b/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneExtension.js
@@ -1,6 +1,29 @@
+import React, { Component } from 'react';
 import OHIFCornerstoneViewport from './OHIFCornerstoneViewport.js';
 
+/**
+ * Pass in 'children' to a React component. The purpose of this is to
+ * allow end users of this extension to pass in components which will
+ * be rendered on top of the base components.
+ *
+ * @param WrappedComponent
+ * @param children
+ * @return {function(*): *}
+ */
+function withChildren(WrappedComponent, children) {
+  return function(props) {
+    return <WrappedComponent children={children} { ...props } />;
+  };
+}
+
+// Note: If you are authoring extensions which use stateful libraries (e.g. cornerstone-core, react-redux) as peerDependencies and are also duplicated at the application level, try using 'yalc' to link it to the application, rather than yarn link. This can help fix 'module not found' issues.
+// https://github.com/whitecolor/yalc
+
 export default class OHIFCornerstoneExtension {
+  constructor(children) {
+    this.children = children;
+  }
+
   /**
    * Extension ID is a unique id, might be used for namespacing extension specific redux actions/reducers (?)
    */
@@ -9,6 +32,10 @@ export default class OHIFCornerstoneExtension {
   }
 
   getViewportModule() {
+    if (this.children && this.children.viewport) {
+      return withChildren(OHIFCornerstoneViewport, this.children.viewport);
+    }
+
     return OHIFCornerstoneViewport;
   }
 
diff --git a/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneViewport.js b/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneViewport.js
index 8f4f70b98..18374b87f 100644
--- a/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneViewport.js
+++ b/Packages-react/extensions/ohif-cornerstone-extension/src/OHIFCornerstoneViewport.js
@@ -41,7 +41,8 @@ class OHIFCornerstoneViewport extends Component {
   static propTypes = {
     studies: PropTypes.object,
     displaySet: PropTypes.object,
-    viewportIndex: PropTypes.number
+    viewportIndex: PropTypes.number,
+    children: PropTypes.node
   };
 
   static id = 'OHIFCornerstoneViewport';
@@ -160,6 +161,7 @@ class OHIFCornerstoneViewport extends Component {
           viewportIndex={this.props.viewportIndex}
         />
       )}
+      {this.props.children}
       </>
     );
   }
diff --git a/Packages-react/extensions/ohif-cornerstone-extension/yarn.lock b/Packages-react/extensions/ohif-cornerstone-extension/yarn.lock
index b990213c3..0457d50ce 100644
--- a/Packages-react/extensions/ohif-cornerstone-extension/yarn.lock
+++ b/Packages-react/extensions/ohif-cornerstone-extension/yarn.lock
@@ -4563,22 +4563,24 @@ react-cornerstone-viewport@^0.1.9:
     stylus "^0.54.5"
 
 react-dom@^16.6.3:
-  version "16.6.3"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.6.3.tgz#8fa7ba6883c85211b8da2d0efeffc9d3825cccc0"
+  version "16.8.1"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.8.1.tgz#ec860f98853d09d39bafd3a6f1e12389d283dbb4"
+  integrity sha512-N74IZUrPt6UiDjXaO7UbDDFXeUXnVhZzeRLy/6iqqN1ipfjrhR60Bp5NuBK+rv3GMdqdIuwIl22u1SYwf330bg==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.11.2"
+    scheduler "^0.13.1"
 
 react@^16.6.3:
-  version "16.6.3"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.6.3.tgz#25d77c91911d6bbdd23db41e70fb094cc1e0871c"
+  version "16.8.1"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.8.1.tgz#ae11831f6cb2a05d58603a976afc8a558e852c4a"
+  integrity sha512-wLw5CFGPdo7p/AgteFz7GblI2JPOos0+biSoxf1FPsGxWQZdN/pj6oToJs1crn61DL3Ln7mN86uZ4j74p31ELQ==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.11.2"
+    scheduler "^0.13.1"
 
 read-pkg-up@^2.0.0:
   version "2.0.0"
@@ -4990,9 +4992,10 @@ sax@~1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
-scheduler@^0.11.2:
-  version "0.11.3"
-  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.11.3.tgz#b5769b90cf8b1464f3f3cfcafe8e3cd7555a2d6b"
+scheduler@^0.13.1:
+  version "0.13.1"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.13.1.tgz#1a217df1bfaabaf4f1b92a9127d5d732d85a9591"
+  integrity sha512-VJKOkiKIN2/6NOoexuypwSrybx13MY7NSy9RNt8wPvZDMRT1CW6qlpF5jXRToXNHz3uWzbm2elNpZfXfGPqP9A==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
diff --git a/Packages-react/ohif-viewer/src/sha.js b/Packages-react/ohif-viewer/src/sha.js
index dbedc2200..6b6313be3 100644
--- a/Packages-react/ohif-viewer/src/sha.js
+++ b/Packages-react/ohif-viewer/src/sha.js
@@ -1 +1 @@
-export default '5bb64fd9254dbd2dd152424fcf584d3a34b05c8a';
+export default '3d1eff07addbc53ced948c42cac8bd351ff083df';