subpage in sidebar showing up unexpectedly

Look at https://www.getsalesresultsnow.com click on Why Chuck, you will see the See Also section (subpages) listed on the sidebar, but then click on FAQ’s, this is a page, it has no subpage(children), but The See Also image shows up in the sidebar where the subpages would be listed, now, mind you there is not a link to a subpage, but I dont want the “See Also” image to show up when there are not any subpages (children) for that page. How do I go about getting the image to be conditional as well as the links etc.? Here is my code.Any help would be appreciated.

<?php global $notfound; ?>
 <?php /* Creates a menu for pages beneath the level of the current page */
  if (is_page() and ($notfound != '1')) {
   $current_page = $post->ID;
   while($current_page) {
    $page_query = $wpdb->get_row("SELECT ID, post_title, post_status, post_parent FROM $wpdb->posts WHERE ID = '$current_page'");
    $current_page = $page_query->post_parent;
   }
   $parent_id = $page_query->ID;
   $parent_title = $page_query->post_title;

if ($wpdb->get_results("SELECT * FROM $wpdb->posts WHERE post_parent = '$parent_id' AND post_status != 'attachment'")) { ?>

<div class="sb-pagemenu">

<img src="https://www.getsalesresultsnow.com/siteimages/see_also.jpg" alt="Related Pages" title="Related Pages"  />

<ul><?php wp_list_pages('sort_column=menu_order&title_li=&child_of='. $parent_id); ?></ul>

    <?php if ($parent_id != $post->ID) { ?>
     <a href="<?php echo get_permalink($parent_id); ?>"><br /><b><?php printf(__('-> Back to %s'), $parent_title ) ?></b></a>
    <?php } ?>
   </div>
 <?php } } ?>

 <?php if (is_attachment()) { ?>
  <div class="sb-pagemenu">
   <a href="<?php echo get_permalink($post->post_parent); ?>" rev="attachment">
 <?php printf(__('Back to \'%s\''), get_the_title($post->post_parent) ) ?></a>
  </div>
<br/>

 <?php } ?>