p40 as a Basal Cell Marker in the Diagnosis of Prostate Glandular Proliferations: A Comparative Immunohistochemical Study with 34betaE12

Figure 4

Well-differentiated acinar glands in a haphazard pattern are considered suspicious for carcinoma. The cytoplasm is pale and abundant; there is some nuclear atypia, and intraluminal eosinophilic bodies are occasionally seen. After immunohistochemistry for basal cells this focus was signed out as acinar adenocarcinoma: Gleason 3+3 (H&E, ×100).