Table 2.

Comparison of Cell Block Recovery in Consecutive Clinical Fine-Needle Aspirations (FNAs) Using the Standard HistoGel-Only Method Versus the Modified Method (HistoGel + Ethanol [EtOH])

Characteristic	Standard HistoGel Method, n = 100	Modified (HistoGel + EtOH) Method, n = 100	P Value
Distribution of diagnostic categories
Positive	43	39	.67
Other (NDX, NEG, ATP, SUS)	57	61
Frequency of cellular cell blocks in positive FNA results	n = 43, No. (%)	n = 39, No. (%)
Cell block containing >20 tumor cells on representative H&E section	31 (72)	38 (97)	.002
No cell block or cell block containing <20 tumor cells	12 (28)	1/39 (3)

Abbreviations: ATP, atypical; H&E, hematoxylin and eosin; NDX, nondiagnostic; NEG, negative; SUS, suspicious.