Table 6.

ROM of the JLCS-JSCC system^* and PSC system^**

Category	ROM of the JLCS-JSCC system in this study, %	ROM of the PSC system in this study, %	ROM of PSC guidelines, % [5]	ROM of the PSC system from a report by Canberk et al., % [9]
Nondiagnostic	NA	NA	40	64.01
NM	17.7 (13.6–27.5)	20.0 (13.6–28.5)	24–43	48.27
ACs	42.8 (21.1–62.5)	42.1 (23.5–77.2)	54	59.09
N-B-LG	−	31.7 (0–80.0)	NA	100
SM	67.1 (50.0–80.0)	69.6 (59.1–80.0)	82	90.00
ML	91.4 (80.9–96.8)	89.9 (70.4–98.1)	77–100	89.74

ROM, risk of malignancy; NA, not available; N-B-LG, neoplastic, benign neoplasm, and low-grade carcinoma; NM, negative for malignancy; AC, atypical cells; SM, suspicious for malignancy; ML, malignancy; PSC, Papanicolaou Society of Cytopathology; JSCC, Japan Lung Cancer Society; JLCS, Japanese Society of Clinical Cytology.

^*The JLCS and JSCC cytology reporting system for lung carcinoma.

^**The PSC reporting system for lung carcinoma.