title: [Experience of Nd-YAG laser treatment in roentogenographically occult bronchogenic squamous cell carcinoma].
abstract: Out of 201 patients with roentogenographically occult bronchogenic squamous cell carcinoma, 165 lesions underwent surgical operations, while 41 lesions underwent non-invasive therapy. The 5-year survival rate including all causes of death, was significantly higher in the surgical operation group than that in the non-invasive therapy group (83% vs 43%). Among 14 cases who received Nd-YAG laser treatment, one case died but 4 cases are alive bearing cancer. Since time span of follow-up period is short, it is hard to say that the prognosis of the Nd-YAG laser therapy in fair. Nd-YAG laser treatments were effective for cancers which did not invade beyond bronchial cartilage. From the bronchoscopic examinations and studies with resected lungs, we suggest that Nd-YAG laser treatments may be effective when cancer is extended within 10 mm wide and has only a slight findings in bronchoscopy.
authors.affiliation: Department of Surgery, Research Institute for Chest Disease and Cancer, Tohoku University.
authors.forename: K
authors.initials: K
authors.lastname: Kanma
authors.forename: Y
authors.initials: Y
authors.lastname: Saito
authors.forename: N
authors.initials: N
authors.lastname: Nagamoto
authors.forename: M
authors.initials: M
authors.lastname: Sagawa
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: S
authors.initials: S
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Usuda
authors.forename: C
authors.initials: C
authors.lastname: Endo
authors.forename: T
authors.initials: T
authors.lastname: Nakada
authors.forename: S
authors.initials: S
authors.lastname: Ota
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002283:Carcinoma, Bronchogenic / Q000000981:diagnostic imaging / Q000601:surgery*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D053685:Laser Therapy; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013902:Radiography, Thoracic; D016896:Treatment Outcome