Histology and Histopathology. 2012 Dec 10. [Epub ahead of print] [Link]
Horiuchi T, Ogata S, Tominaga S, Hiroi S, Kawahara K, Hebisawa A, Irei I, Ito I, Kameya T, Tsujimura T, Nakano T, Nakanishi K, Kawai T.
Department of Pathology and Laboratory Medicine, National Defense Medical College, Tokorozawa. Japan.
It is difficult to distinguish desmoplastic malignant mesothelioma (DMM) from fibrous pleuritis (FP). We investigated the utility of immunohistochemistry as a way of differentiating between DMM and FP. We examined 11 DMMs and 46 FPs with the aid of antibodies against 18 cytokeratin (CK) subtypes, calponin, caldesmon, desmin, and GLUT-1. The best sensitivity and specificity cut-off values in the receiver operating characteristic curves (ROC) for CKs 7, 8, 17, 18, and 19, and GLUT-1 were each above 60%. When cases with either DMM or FP were partitioned by the staining score associated with the best sensitivity and specificity cut-off values in ROC, the incidence of a positive expression for CKs 7, 8, 17, 18, and 19, and GLUT-1 was significantly higher in DMM than in FP. In conclusion, immunohistochemistry for CKs 7, 8, 17, 18, and 19, and GLUT-1 may be useful, alongside histological characteristics, for separating DMM from FP.