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Table 2 Cases of lung cancer among 187 high risk participants with CT scan and sputum examination

From: Is it useful to combine sputum cytology and low-dose spiral computed tomography for early detection of lung cancer in formerly asbestos-exposed power industry workers?

No. Examinationa Locationb Diagnosisc Histologyd Stage Survivale
1 b per CT + spu SQC IIIa  
2 r per CT + spu SQC Ia 29
3 b per CT ADO Ia  
4g b per CT    7
5 r per CT LAC IIIb 23
6 b per CT ADO Ia 64
7 b cen CT + spu SQC IV 21
8 b cen CT + spu SQC Ia  
9 r cen CT + spu SQC IIb 33
10 b cen CT + spu SQC Ib 18
11 b cen CT SMC Ia 28
12 r cen spu SQC IIIb 72
13 i cen   SMC IIb 14
14 i      35
15h f      
16 f    SMC IIIb k
17 f    SMC IIb k
18 f     IIIb k
  1. aExamination with significant result: b = baseline, r = re-examination, i = interval, f = follow-up.
  2. bLocation of tumour: per = peripheral, cen = central.
  3. cResult indicating diagnosis: CT = low-dose spiral computed tomography, spu = sputum cytology.
  4. dHistology of lung carcinoma: SQC = squamous cell, ADO = adeno, LAC = large cell, SMC = small cell.
  5. eSurvival time after beginning of initial clinical symptoms indicating the disease (months).
  6. gDied suddenly 2004 before biopsy could be taken, diagnosis unequivocal clinically and on CT.
  7. hDied 2008 with lung cancer after refusing further examinations.
  8. kAlive by the end of follow-up.
  9. In patients with missing data the documented histories were incomplete or could not be retrieved in time.