diff --git a/Packages/lesiontracker/client/collections/LesionLocations.js b/Packages/lesiontracker/client/collections/LesionLocations.js
index 4f0c7f528..e82aec8ff 100644
--- a/Packages/lesiontracker/client/collections/LesionLocations.js
+++ b/Packages/lesiontracker/client/collections/LesionLocations.js
@@ -16,6 +16,7 @@ var organGroups = [
     'Liver',
     'Lung',
     'Lymph Node',
+    'Mediastinum/Hilum',
     'Muscle',
     'Neck',
     'Other: Soft Tissue',