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Screen of napsin A expression in lung neuroendocrine neoplasms.
| Number tested | Number (%) napsin A-positive | |
|---|---|---|
|
| ||
| Typical carcinoid (TMA) | 88 | 0 |
|
| ||
| Atypical carcinoid (TMA) | 89 | 0 |
|
| ||
| Small cell carcinoma (TMA) | 37 | 0 |
|
| ||
| Large cell neuroendocrine carcinoma | ||
| All cases combined | 112 | 17 (15%) |
| -TMA | −69 | −8 (12%) |
| -Whole-tissue sections | −43 | −9 (21%) |
TMA = tissue microarrays
