How to Display pages with a Custom Fields in one page

Question

You can get pages with get_pages(), in the arguments you can provide a search query for post_meta, like for example:

$args = array(
    'post_type'  => 'page',
    'meta_key'   => 'section',
    'meta_query' => array( array(
        'key'     => 'section'
        'value'   => 'surgery' // here you could place get_the_title()
        'compare' => '='
    ) )
);

$pages = get_pages( $args );

This will return all pages (or any other post types in post_type) with meta_key section and meta_value surgery.

You have to alter the loop if you use this way, build your loop as follow:

foreach( $pages as $page ) : setup_postdata( $page );
...
endforeach; wp_reset_postdata();

Hope this will help you.