| Description |
The neoplasms following primary lung cancer (LC) and primary neoplasms before LC analyzed a retrospective study in survivors, notified in the National Czech Cancer Registry between 1976 and 2010. A total 16 622 LC in males associated with other neoplasms, presented 10 % of 166 239 newly registered LC in males, of which were 4,395 (2.6 %) primary and 12,227 (7.4 %) subsequent LC; a total 5,322 LC in females, presented 14.1 % of 37,619 newly registered LC in females, of which were 1,022 (2.7 %) primary and 4,300 (11.4 %) subsequent LC. The average interval of occurrence of subsequent neoplasms was 4.1 years in males and 3.9 years in females. Among subsequent neoplasms (after LC) were about 23 % cancers of digestive and 14% urinary tract, in males 14% cancers of respiratory tract, 14 % skin and 11 % prostate, in females 11% cancers of female genital organs, 11 % skin and 11% breast. Among primary neoplasms (before LC) were about 38 % cancers of skin, 13 % urinary, 13 % digestive and 10 % respiratory tract in males; 27 % cancers of skin, 21 % female genital organs, 17% breast, 9 % digestive and 5 % urinary tract in females. The yearly number of primary LC has increased since 1976 to 2010 from 65 to 119 cases, their representation at the early clinical stages decreased in 5-year periods from 53% to 22 %, at the advanced stages increased from 20 % to 64 %; the number of subsequent LC increased from 23 to 1089 cases, their early clinical stages decreased from 33 % to 20 %, the advanced stages increased from 29 % to 63 %. The higher proportion of LC at the unknown stages limited detailed analysis. In our study were estimated about 1,155 neoplasms at the advanced stages (19 % in males and 22 % in females of all subsequent neoplasms) diagnosed after primary LC, which presented a monthly average of three cancers during 34 years.
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