Chromosomal aberrations, profiles of expression of growth-related markers including galectins and environmental hazards in relation to the incidence of chondroid pulmonary hamartomas

Pathology, Research and Practice
K KayserHans-Joachim Gabius


This prospective study includes 103 cases of chondroid pulmonary hamartomas, resected over a period of nearly six years. Genes encoding proteins of the high motility group (HMGI-C, (Y), chromosomes 12q15 and 6p21) were analyzed cytogenetically. Furthermore, we examined the expression of growth-regulatory markers, including galectins-1, -3, -8, heparin-binding lectin (HBL), calcyclin (S100A6) and macrophage migration inhibitory factor (MIF), as well as that of Ki-67 (MIB-1). Syntactic structure analysis was applied to automated classification of stained histological slides and for the detection of topological properties in hamartomas and disease-free lung. These data were set in relation to clinical features, including environmental hazards, smoking habit, and the occurrence of heart-lung disease. Men and women contributed to the study in 61 and 42 cases, respectively. Smoking was frequent (75% men and 54% women), with a mean tobacco consumption of 36 pack years. Aberrations affecting exclusively the HMGI-C gene and the HGMI(Y) gene were seen in 46 cases (44.7%) and in 22 cases (21.3%), respectively. Both genes were affected in only one case. Abnormalities most frequently occurred in chromosomal bands 6p12 and 12q14. Genetic abe...Continue Reading


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