Myoid Gonadal Stromal Tumor of the Testis
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Myoid gonadal stromal tumor (MGST) is an emerging entity described in the WHO classification edited in 2016 (Moch et al. 2016) as neoplasm with “spindle-shaped cells showing features of smooth muscle and gonadal stroma.”
It is a rare tumor with less than ten cases published.
In the cases published, this tumor occur in young adults, but it was firstly described in a 4-year-old boy (Evans 1977).
It occurs in the testis.
Orchiectomy or nodulectomy (if diagnosed after intraoperatory examination).
The clinical follow-up provided for all the reported patients were negative for recurrence or metastatic disease.
The tumors are circumscribed, nonencapsulated intratesticular nodules ranged from 1.2 to 3.5 cm. In the published cases, no macroscopical figure has been provided (Kao and Ulbright 2014).
References and Further Reading
- Evans, H. L. (1977). Unusual gonadal stromal tumor of the testis. Case report with ultrastructural observations. Archives of Pathology & Laboratory Medicine, 101(6), 317–320.Google Scholar
- Moch, H., Humphrey, P. A., Ulbright, T. M., & Reuter, V. E. (2016). WHO classification of tumours of the urinary system and male genital organs (4th ed.). Lyon: IARC.Google Scholar