Phase I Trial of Photodynamic Therapy With HPPH (2-1[Hexyloxyethyl]-2-devinylpyropheophorbide-a) for Treatment of Dysplasia, Carcinoma in Situ and Stage I Carcinoma of the Oral Cavity
Phase I Trial of Photodynamic Therapy With HPPH (2-1[Hexyloxyethyl]-2-devinylpyropheophorbide-a) for Treatment of Dysplasia, Carcinoma in Situ and Stage I Carcinoma of the Oral Cavity
RATIONALE: Photodynamic therapy uses a drug, such as HPPH, that is absorbed by tumor cells. The drug becomes active when it is exposed to light. When the drug is active, tumor cells are killed.
PURPOSE: This phase I trial is studying the side effects and best dose of photodynamic therapy using HPPH in treating patients with recurrent dysplasia, carcinoma in situ, or stage I oral cavity cancer.
OBJECTIVES:
Primary
Secondary
OUTLINE: This is a dose-escalation study of laser light dose therapy.
Patients receive HPPH IV over 1 hour on day 1. Approximately 24 hours after receiving HPPH, patients undergo laser light treatment to the tumor bed on day 2. Patients with multicentric or large area confluent disease receive a second course of treatment at least 8 weeks later for lesions untreated at the first treatment session.
After completion of study treatment, patients are followed at 1 week, 1 month, 3 months, and periodically thereafter.
DISEASE CHARACTERISTICS:
Biopsy-confirmed diagnosis of 1 of the following:
Mild to severe dysplasia
Carcinoma in situ (CIS) of the oral cavity
Stage I (T1) squamous cell carcinoma of the oral cavity
Recurrent or primary disease
No T2 or greater squamous cell carcinoma, exophytic CIS, or dysplasia lesions
PATIENT CHARACTERISTICS:
PRIOR CONCURRENT THERAPY: