Thymoma | ||
Cellular component | Expressed | Negative |
Neoplastic epithelial cells |
|
|
Thymocytes |
| |
Thymic carcinoma | ||
Carcinoma subtype | Expressed | Negative |
Squamous cell carcinoma |
|
|
NUT carcinoma |
| |
Low-grade papillary adenocarcinoma[3] |
|
|
Mucoepidermoid carcinoma[4] |
| |
Enteric-type adenocarcinoma[3] |
|
|
Adenocarcinoma, NOS[3] |
|
|
Immunostains aiding in the distinction between thymic carcinoma and metastases[2,5] | ||
Immunostain; % positive cases | Thymic carcinoma | Metastases |
CD5 | 20 to 100 | 0 to 34* |
CD117 | 60 to 87 | 20 to 100¶ |
CD5 & CD117 | 54 to 65 | 0Δ |
CD205 | 52 to 76 | 4 to 27 |
FoxN1 | 59 | 13 |
PAX8 | 0 to 80◊ | 0 to 33Δ◊ |
PAX8 & CD117 | 69 | 0 |
PAX8 & CD5 | 46 | 0 |
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