A 54-year-old male was diagnosed as having synchronous quadruple early stage lung
cancer. All four tumors showed the same histologic type of in-situ or microinvasive
squamous cell carcinoma, but existed independently in different bronchi. Photodynamic
therapy of these four lesions was successfully performed by fiberoptic bronchoscopy
because of the patient's poor pulmonary function. The patient is alive and well 51
months later.
