Table 2. Diagnostic accuracy of cytomorphological features in relation to tumor histotype.

Histotype	Cytomorphological features	Sensitivity %	Specificity %	Overall Accuracy %	p
Adenocarcinoma	Nucleoli and small-medium clusters	73	98	90	<0.001
Squamous cell carcinoma	High necrosis and large clusters	74	99	97	<0.001
Small cell carcinoma	Moderate necrosis and single cells	79	96	94	<0.001