Photodynamic Therapy With HPPH in Treating Patients With Squamous Cell Carcinoma of the Oral Cavity

recurrent squamous cell carcinoma of the lip and oral cavity, recurrent squamous cell carcinoma of the oropharynx, recurrent verrucous carcinoma of the oral cavity, stage i squamous cell carcinoma of the lip and oral cavity, stage i squamous cell carcinoma of the oropharynx, stage i verrucous carcinoma of the oral cavity, stage ii squamous cell carcinoma of the lip and oral cavity, stage ii squamous cell carcinoma of the oropharynx, stage ii verrucous carcinoma of the oral cavity, stage iii squamous cell carcinoma of the lip and oral cavity, stage iii squamous cell carcinoma of the oropharynx, stage iii verrucous carcinoma of the oral cavity