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. 1999 Jul;80(9):1435–1439. doi: 10.1038/sj.bjc.6690540

Comparison of endoscopic features of early-stage squamous cell lung cancer and histological findings

C Konaka 1, T Hirano 1, H Kato 1, K Furuse 2, M Takada 3, Y Saito 4, Y Monden 5, E Matsui 6, Y Watanabe 7
PMCID: PMC2363075  PMID: 10424747

Abstract

Seventy cases with early-stage central-type squamous cell carcinoma were treated surgically between 1984 and 1993 in seven participating institutes. We classified endoscopic features of early-stage central-type squamous cell carcinoma into three types (hypertrophic type, nodular type and polypoid type). After surgery we investigated the relationship between endoscopic features and both the area of superficial extent and depth of carcinoma invasion based on histopathological investigations of the surgical specimens. In 66.7% of the hypertrophic type lesions cancer cells did not invade into the cartilaginous layer, and only 4.8% of this type showed tumour invasion beyond the bronchial cartilage. On the other hand, a few nodular and polypoid type cases showed in-situ carcinoma or carcinoma with invasion from the subepithelial layer to the muscle layer, and in approximately 20% the these types we observed carcinoma invasion beyond the cartilaginous layer, which was not suitable for photodynamic therapy. Also, concerning the greatest dimension 24 out of 35 lesions (68.6%) less than 10 mm in the greatest dimension were evaluated as either in-situ carcinoma or micro-invasive tumour within the muscle layer. The endoscopic features can provide a basis for the determination of therapeutic strategy in early-stage central-type lung cancer. © 1999 Cancer Research Campaign

Keywords: early-stage central-type of squamous cell carcinoma, endoscopic features, histopathological findings, bronchus

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Selected References

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