The Accurate Interpretation and Clinical Significance of Morphological Features of Fine Needle Aspiration Cells in Papillary Thyroid Carcinoma

Table 2

The cell arrangement characteristics of patients with papillary thyroid carcinoma and benign lesions (%).

Groups	n	True papillae	Papillae-like	Swirl	Escape
PTC	337	70 (20.77)	222 (65.88)	262 (77.74)	85 (25.22)
BL	197	0 (0.00)	48 (24.37)	0 (0.00)	0 (0.00)
TAD	71	0 (0.00)	27 (38.03)	0 (0.00)	0 (0.00)
NG	64	0 (0.00)	8 (12.5)	0 (0.00)	0 (0.00)
HD	23	0 (0.00)	2 (8.70)	0 (0.00)	0 (0.00)
NG and TAD	39	0 (0.00)	11 (28.21)	0 (0.00)	0 (0.00)
Sensitivity	(95% CI)	20.77 (±4.33)	65.88 (±5.06)	77.74 (±4.44)**	25.22 (±4.64)
Specificity	(95% CI)	100.00 (±0)	75.63 (±5.99)	100.00 (±0)	100.00 (±0)
Accuracy	(95% CI)	50.00 (±4.24)	69.48 (±3.91)	85.96 (±2.95)	52.81 (±4.23)

PTC: papillary thyroid carcinoma; BL: benign lesions; TAD: thyroid adenoma; NG: nodular goiter; HD: Hashimoto’s disease.
** as compared to true papillae or escape.