Immunohistochemical Characterization of Three Monoclonal Antibodies Raised against the Epidermal Growth Factor and Its Receptor in Non-Small-Cell Lung Cancer: Their Potential Use in the Selection of Patients for Immunotherapy

Table 2

Tumor characteristic.

Features	No. (%)
Histopathological type
Small cell lung carcinoma	12/71 (16.90)
Non-small cell lung carcinoma
Squamous cell carcinoma	20/71 (28.17)
Adenocarcinoma	23/71 (32.39)
Large cell carcinoma	6/71 (8.45)
Other	10/71 (14.08)
Grade of differentiation
Well	10/71 (14.08)
Moderate	24/71 (33.80)
Poor	22/71 (30.99)
Undifferentiated	15/71 (21.13)
Degree of cell pleomorphism
No evident	3/71 (4.22)
Low	29/71 (40.85)
Moderate	23/71 (32.39)
High	16/71 (22.53)
Necrosis index
No evident	27/71 (38.03)
<50%	17/71 (23.94)
>50%	27/71 (38.03)
Mitotic index
No evident	8/71 (11.27)
Low	22/71 (30.99)
Moderate	22/71 (30.99)
High	19/71 (26.76)

No.: number of cases; %: percentages.