Pattern of staining | |||||
---|---|---|---|---|---|
N | ALK expression | c/n | c | n | |
ALK expression was determined by immunohistochemistry using the monoclonal antibodies ALK1 and ALKc. | |||||
c/n, cytoplasmic and nuclear staining; c, cytoplasmic staining only; n, nuclear staining only; LPD, lymphoproliferative diseases. | |||||
Systemic (nodal) ALCL | 51 | 20 | 15 | 5 | 0 |
Primary gastrointestinal ALCL | 14 | 0 | – | – | – |
Primary nasal ALCL | 5 | 0 | – | – | – |
Cutaneous CD30+ LPD | |||||
Primary cutaneous ALCL | 15 | 0 | – | – | – |
Lymphomatoid papulosis | 7 | 0 | – | – | – |