Expression in normal cells

 normal and neoplastic endometrial stromal cells
 biliary canaliculi (#2144860#)
 Wolffian-type epithelium and Wolffian epithelial cells

• Mullerian-type epithelium is CD10-

Expression in lesions

• paratesticular cysts with benign epithelial proliferations of wolffian origin.
• wolffian glandular inclusions in inguinal hernia sacs

Expression in tumors

 lymbloblastic lymphoma and lymphoblastic leukemias
 mesonephric tumors

• mesonephric adenocarcinoma of the uterine corpus (#11717545#)

 hepatocellular carcinoma (canalicular immunostaining) (#11688465#)

References

 Nistal M, Gonzalez-Peramato P, Serrano A, Vega-Perez M, De Miguel MP, Regadera J. Paratesticular cysts with benign epithelial proliferations of wolffian origin. Am J Clin Pathol. 2005 Aug;124(2):245-51. PMID: #16040296#

 Cerilli LA, Sotelo-Avila C, Mills SE. Glandular inclusions in inguinal hernia sacs: morphologic and immunohistochemical distinction from epididymis and vas deferens. Am J Surg Pathol. 2003 Apr;27(4):469-76. PMID: #12657931#

 Cerilli LA, Sotelo-Avila C, Mills SE. Glandular inclusions in inguinal hernia sacs: morphologic and immunohistochemical distinction from epididymis and vas deferens. Am J Surg Pathol. 2003 Apr;27(4):469-76. PMID: #12657931#

 Toki T, Shimizu M, Takagi Y, Ashida T, Konishi I. CD10 is a marker for normal and neoplastic endometrial stromal cells. Int J Gynecol Pathol. 2002 Jan;21(1):41-7. PMID: #11781522#

 Ordi J, Romagosa C, Tavassoli FA, Nogales F, Palacin A, Condom E, Torne A, Cardesa A. CD10 expression in epithelial tissues and tumors of the gynecologic tract: a useful marker in the diagnosis of mesonephric, trophoblastic, and clear cell tumors. Am J Surg Pathol. 2003 Feb;27(2):178-86. PMID: #12548163#

 Ordi J, Nogales FF, Palacin A, Marquez M, Pahisa J, Vanrell JA, Cardesa A. Mesonephric adenocarcinoma of the uterine corpus: CD10 expression as evidence of mesonephric differentiation. Am J Surg Pathol. 2001 Dec;25(12):1540-5. PMID: #11717545#