Epithelioid mesothelioma versus primary pulmonary adenocarcinoma
Markers positive in adenocarcinoma but negative in mesothelioma have now been supplemented with a range of markers positive in mesothelioma and negative in adenocarcinoma. Generally, a panel should contain members of both groups. The following panels have been recommended, based on studies of panels of markers:
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Summary17 |
sensitivity |
specificity |
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44-3A6 |
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Amylase |
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80% |
91% |
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80% |
88% |
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BG-8 |
88% |
89% |
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Blood-group related antigens A, B &H |
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BMA-120 |
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56% |
99.5% |
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80% |
86% |
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CD44S |
66% |
61% |
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55% |
92% |
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84% |
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CK4 |
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80% |
83% |
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CK8/18/19 |
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CK13/16 |
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CK16 |
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89% |
66% |
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78% |
51% |
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HEA125 |
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HMFG-2 |
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IOB3 |
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67% |
93% |
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97% |
53% |
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91% |
88% |
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77% |
65% |
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p-170gp |
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PDGFR-beta |
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Secretory component |
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SP-A |
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SM3 |
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62% |
81% |
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75% |
100% |
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66% |
72% |
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76% |
97% |
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A: preferentially stains adenocarcinoma, M: preferentially stains (epithelioid) mesothelioma, 1: first line marker, 2: second line marker, 3: third line marker, etc, =1: two or more markers are equally recommended as alternative first line markers, O: studied but not recommended.
Most studies have been of mesothelioma versus pulmonary adenocarcinoma. Some metastatic carcinomas, such as renal cell carcinoma, pose particular problems. The differentiation of peritoneal mesothelioma from ovarian serous tumours possess specific problems.
The following is a summary of the usual patterns of immunoreactivity in different types of mesothelioma:
See also:
References Dail and Hammar, 2nd ed., p 1516-1526
This page last revised 7.8.06. ©SMUHT/PW Bishop
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