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Adenomatoid tumor is a mesothelial proliferation showing a nested, tubular, or cord-like pattern of growth.
It is the most common paratesticular tumor occurring in one third of the neoplasm of the region, and it is the most common benign neoplasm of testicular adnexa.
Adenomatoid tumors of paratesticular region occur across a wide range of ages most commonly between 20 and 50 years (mean age 36 years).
Adenomatoid tumors occur in both sexes and are also found in the ovary, uterus, and fallopian tubes of the female genital tract.
Most reported cases originate in the epididymis, but they rarely occur in the spermatic cord, in the testicular tunica (albuginea or vaginalis), in ejaculatory ducts and in the prostate. The tail of epididymis is the most common site of occurrence. Most challenging cases are reported in the tunica albuginea with an intratesticular component.
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References and Further Reading
- Colecchia, M., & Nicolai, N. (2016). Frozen section in testicular pathology. In Pathology of testicular and penile neoplasms (pp. 203–212). Cham: Springer.
- Perez-Ordonez, B., & Srigley, J. R. (2000). Mesothelial lesions of the paratesticular region. Seminars in Diagnostic Pathology, 17(4), 294–306.
- Skinnider, B. F., & Young, R. H. (2004). Infarcted adenomatoid tumor: A report of five cases of a facet of a benign neoplasm that may cause diagnostic difficulty. American Journal of Surgical Pathology, 28(1), 77–83.