Synonyms
Benign postpubertal testicular teratoma; Dermoid cyst; Type I germ cell tumor of the testis
Definition
A tumor usually seen in the prepubertal testis (but it encompasses all age groups) composed of tissue derived from one or more of different germinal layers.
Clinical Features
Incidence
Teratomas are, after YST, the second most frequent (14–20%) GCT in infancy.
Age
This tumor occurs before puberty, while when occurring in older patients they may have been present but undiagnosed since childhood. They typically occur before the age of 6 years, the oldest reported patient being 59 years with an average age of 20 months.
Site
Testis.
Treatment
Conservative treatment is appropriate.
Outcome
Actually no documented cases have exhibited malignant behavior (Zhang et al. 2013). The exception is carcinoid tumor that has a metastatic potential.
Macroscopy
Grossly prepubertal-type teratoma occurs as a solid nodule or with a cystic component filled with keratinous (Fig. 1) or mucoid...
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References and Further Reading
Ulbright, T. M., & Srigley, J. R. (2001). Dermoid cyst of the testis: A study of five postpubertal cases, including a pilomatrixoma-like variant, with evidence supporting its separate classification from mature testicular teratoma. The American Journal of Surgical Pathology, 25(6), 788–793.
Wang, W. P., Guo, C., Berney, D. M., Ulbright, T. M., Hansel, D. E., Shen, R., Ali, T., & Epstein, J. I. (2010). Primary carcinoid tumors of the testis: A clinicopathologic study of 29 cases. The American Journal of Surgical Pathology, 34(4), 519–524.
Zhang, C., Berney, D. M., Hirsch, M. S., Cheng, L., & Ulbright, T. M. (2013). Evidence supporting the existence of benign teratomas of the postpubertal testis: A clinical, histopathologic, and molecular genetic analysis of 25 cases. The American Journal of Surgical Pathology, 37(6), 827–835.
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Colecchia, M., Bertolotti, A. (2020). Teratoma, Prepubertal-Type. In: Raspollini, M.R., Lopez-Beltran, A. (eds) Uropathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-41894-6_4957
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DOI: https://doi.org/10.1007/978-3-030-41894-6_4957
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