RESUMEN
Objective To investigate the clinicopathological features, immunohistochemical expression and differential diagnosis of uterine and ovarian adenomatoid tumors. Methods 315 specimens of patients who underwent uterus and oophorectomy in our hospital from January 2016 to December 2017 were retrospectively analyzed, including 20 specimens of uterus and ovarian adenomatoid tumors. Their clinicopathological features and immunohistochemical expression were analyzed and related literature was reviewed. Results 20 cases of adenomatoid tumors were 6.34％ of surgical specimens, including 18 cases of uterine adenomatoid tumors and 2 cases of ovarian adenomatoid tumors. The average diameter of the tumor was (2.52±0.17) cm, and the tumor was located between the muscle wall, subserosal or uterine subserosal. Immunohistochemical staining showed CK (AE1/AE3), MC and calretinin were positive, CD34, ER, PR and Desmin were negative. No malignant lesions and recurrence occurred during follow-up after surgery. Conclusion Uterine and ovarian adenomatoid tumors are relatively rare, without specific clinical features, which is easy to be misdiagnosed and missed diagnosis. Correct use of immunohistochemistry can improve the detection rate of uterine and ovarian adenomatoid tumors.