Sq cell Ca anus | Squamous cell carcinoma of the anus recurrent | Squamous cell carcinoma of the anus stage I | Squamous cell carcinoma of the anus stage II | Squamous cell carcinoma of the anus stage III | Squamous cell carcinoma of the anus stage IV | Squamous cell carcinoma of the anus stage unspecified | Anal squamous cell carcinoma |