title: [Studies on the diagnosis and prognosis of T1 primary cancer in the periphery of the lung].
abstract: Seventy-eight patients with resected carcinoma of the lung classified as T1 and which arose in the periphery of the lung during the past 10 years were reviewed in order to evaluate both diagnostic methods in assessment of lung cancer and surgical survival. According to the size of the surgically excised lung tumor measured in greatest diameter, the patients were divided into Groups A, B, C and D. From the diagnostic point of view, procedures performed to establish a conclusive diagnosis during surgery, so-called exploratory thoracotomy, were most prevalent in Groups A, B, and C and least in Group D in decreasing degree. On the contrary, the frequency with which diagnosis could be achieved preoperatively increases with size of tumor. Metastases to the regional lymph nodes were found in Group D at a greater rate than in the other 3 groups. However there was no statistical correlation between histologic types and metastases to regional lymph nodes. The 5-year survival rate was 66.7% in Group A, 72.7% in Group B, 21.2% in Group C and 35.4% in Group D. And there was a statistically significant difference between Groups A and B and Groups C and D.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001707:Biopsy, Needle; D018288:Carcinoma, Small Cell / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D003131:Combined Modality Therapy; D006801:Humans; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000601:surgery; D008197:Lymph Node Excision / Q000401:mortality; D011013:Pneumonectomy / Q000401:mortality*; D011379:Prognosis; D013902:Radiography, Thoracic