How to render custom view mode in d7

Question

I'm trying to render nodes with a custom view mode, having another tab for each node in the same place than "Edit", "View", etc. So I have declared my custom view mode with hook_entity_info_alter, my new "tab" with hook_menu, with a page_callback pointing to a custom function that should return the node according to my custom view node. It works great, but the node title is rendered too. How can I remove the node title ? Here is the code. Thanks!

   /**
   * Implements hook_entity_info_alter().
   */
   function test_custom_view_mode_entity_info_alter(&$entity_info) {
     $entity_info['node']['view modes']['another_teaser'] = array(
       'label' => t('Another teaser'),
       'custom settings' => TRUE,
     );
   }

   /**
   * Implements hook_menu().
   */
   function test_custom_view_mode_menu()
   {      $items['node/%node/another-teaser'] = array(
           'title' => 'Another Teaser',
           'page callback' => '_test_custom_view_mode_display_content',
           'page arguments' => array(1),
           'access arguments' => array('access content'), 
           'type' => MENU_LOCAL_TASK,
       );   

          return $items;
   }
   /**
   * Custom page callback hook_menu().
   */

   function _test_custom_view_mode_display_content($node) {
     $node_viewed = node_view(node_load($node->nid), 'another_teaser');

     return array(
              'content' => array(
                'node' => $node_viewed,
              ),
            );
   }

Answer 1

I think you need to render send the element as html out put since there is no any theme function defined. See how this output process here.

So your return array should be:

 return array(
          '#markup' => $node_rendered
        );