Patients with epidermal growth factor receptor mutations
| Patient No. | Age yrs | Sex | Mutation exon | Sampling technique | Stage |
| 1 | 62 | Male | 21 (Leu858Arg) | Surgery | IV |
| 2 | 47 | Female | 21 (Leu858Arg) | Pericardiocentesis | IV |
| 3 | 69 | Male | 19 (745−750del) | EBUS-TBNA | IV |
| 4 | 70 | Female | 21 (Leu858Arg) | Surgery | IIIA |
| 5 | 71 | Male | 19 (751−759del) | EBUS-TBNA | IV |
In all cases, the patients exhibited an adenocarcinoma pathology. Leu858Arg: substitution of leucine 858 with arginine; del: deletion of codon numbers indicated; EBUS-TBNA: endobronchial ultrasound-guided transbronchial needle aspiration.