Napsin A

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Napsin is a commonly used immunostain in pulmonary pathology.

Positive

Lung adenocarcinoma - 83% of cases.^[1]
Papillary renal cell carcinoma 79% of cases.^[1]

Occasionally positive

Clear cell renal cell carcinoma - 34% of cases.^[1]
Papillary thyroid carcinoma - 2/81 cases, tall cell variant only.^[1]

Negative

See also

Immunohistochemistry.

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 ^1.7 Bishop, JA.; Sharma, R.; Illei, PB. (Jan 2010). "Napsin A and thyroid transcription factor-1 expression in carcinomas of the lung, breast, pancreas, colon, kidney, thyroid, and malignant mesothelioma.". Hum Pathol 41 (1): 20-5. doi:10.1016/j.humpath.2009.06.014. PMID 19740516.

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Immunohistochemistry