11 Eighteen cases of morphoeic basal cell carcinoma and 19 cases of desmoplastic trichoepithelioma were studied by Costache et al.12 who concluded that the expression of CD10 was a reliable indicator for the diagnosis of morphoeic basal cell carcinoma only when the expression was present in the aggregations of cells, whereas stromal reactivity was not a Selleck BIBF1120 useful marker for differentiation. We did not have a desmoplastic type of TE. Be that as it may, one out of three cases of morphoeic basal cell carcinoma showed epithelial staining. Our study Inhibitors,research,lifescience,medical also showed that stromal reactivity may not be a useful
marker for differentiation. CD10 is also regarded as a myoepithelial-specific marker; and in some studies, it is described as involving benign eccrine tumors. Bahrami,13 showed that CD10 Inhibitors,research,lifescience,medical was beneficial in distinguishing metastatic cutaneous renal cell carcinoma from skin tumors with eccrine and apocrine differentiation, but not tumors with sebaceous differentiation. Recently, the expression of CD10 has been reported in a variety of epithelial and mesenchymal neoplasms. CD10-positive epithelial neoplasms include renal cell carcinoma, hepatocellular carcinoma, urothelial carcinoma, and prostatic carcinoma.8,14 CD10 has been allied to tumor progression and
metastasis in different tumors. For example, a significant positive relationship has been found between CD10 expression and Breslow thickness, Clark level, and ulceration Inhibitors,research,lifescience,medical in malignant melanoma.15 In the oral cavity SCC, CD10 stromal Inhibitors,research,lifescience,medical positivity is correlated with the presence of metastasis, local recurrence, and high tumor grade.16 In one study, CD10 expression was investigated in 20 cases of cutaneous SCC of different grades (well, moderately, and poorly differentiated), and the authors concluded that 1) stromal expression
of CD10 is not lost in deeply invasive SCC, as previous literature suggested; and 2) lack of cytoplasmic expression of CD10 by cutaneous SCC can be considered as an additional prognosis factor to investigate in the future.17 In another study, CD10 was expressed in the stromal cells of a total of 9 SCC cases.8 In Inhibitors,research,lifescience,medical the current study, immunoreactivity was detected in the stromal cells of all the 50 SCC cases. Nevertheless, in the tumor cells at the center of the epithelial nests, immunoreactivity was detected in 5 cases (10%), which were placed focally in less than 10% of the tumor cells. In future studies, we aim to investigate CD10 expression in SCC groups Carnitine palmitoyltransferase II of low and high risk according to the degree of differentiation, size, and depth of invasion (perineurial and lymphovascular invasion).18 CD10 expression will be compared between these groups. Conclusion The present study showed a statistically significant difference in the CD10 staining pattern between TE and BCC. Condensation of CD10-positive stromal cells around basaloid nests favors TE over BCC. Thus, CD10 is a useful adjunct marker in distinguishing these tumors.
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