Page Argument in Title
You can use a title callback function along with title arguments:

$items['path/path/%'] = array(
  'title callback' =&gt; 'MYMODULE_page_title',
  'title arguments' =&gt; array(2),
  'page callback'    =&gt; 'pagecallback',
  'page arguments' =&gt; array(2),
  'type'             =&gt; MENU_CALLBACK,
  'access arguments' =&gt; array('access content'),
);

function MYMODULE_page_title($arg) {
  return t('Arg is: @arg', array('@arg' =&gt; $arg));
}


The default title callback is t(), so if you just need the argument to be passed straight through as the title you can get away with just using title arguments.

See hook_menu() for more details.